20130508

Iron man




Went to see Iron Man 3 this evening. Predictable amounts of action and nonsense. Entertaining I suppose but not really my sort of movie.  I preferred Avatar - why? - not for the plot, but because it had that wonder element, because I could imagine myself there, because it could have happened, because it was extremely beautiful, because it was a worthy benchmark in 3D technology.

On the way back I caught a glimpse of what might have been a meteor - it was green and larger that any I have seen before.

Five miles

Tuesday morning I woke with the sun so, being that time of the year, I increased my normal first-thing-in-the-morning-3.5-mile-run to the boat-house-lake-shore route which is exactly 5 miles.  The lake is high-ish which means wading in places, but is doable. I passed a couple fishing that early - they think me mad to be running with no shirt and I similarly cannot understand what would possess a man to sit shivering by the lake shore holding a line in the water.

What with the high lake level which makes my full lake route not feasible, the council's work on the local roads which has left them strewn with sharp stones, and forestry work which has churched up the tracks and made them most uncomfortable under barefoot, I feel like my habit is being compromised!

20130504

That time of the year

At last it is beginning to get warmer. Which means less excuse for short runs. Today, after planting out tomatoes in the morning, I did the Kings River loop plus a bit, so about 10 miles. Gasp!  So good to come back to a hot shower and a mug of tea.

20130503

Repetition


C S Lewis, story teller par excellence
No I am not doing a pep talk on C S Lewis. There are too many others out there doing that, and doubtless better than ever I could.  Suffice it to say that his fiction had a significant part in moulding my upbringing.  In this post I am merely using his insight.

Although repetition can be used to good effect, for example in education or to convey a superlative in poetry, some things are too good to be repeated in too small a timeframe.

"Now he had come to a part of the wood where great globes of yellow fruit hung from the trees... He picked one of them... Then by accident one of his fingers punctured it and went through into coldness. After a moment's hesitation he put the ' little aperture to his lips. He had meant to extract the smallest, experimental sip, but the first taste put his caution all to flight... It was like the discovery of a totally new genus of pleasures, something unheard of among men, out of all reckoning, beyond all covenant. For one draught of this on Earth wars would be fought and nations betrayed. It could not be classified. He could never tell us, when he came back to the world of men, whether it was sharp or sweet, savoury or voluptuous, creamy or piercing. 'Not like that' was all he could ever say to such inquiries. As he let the empty gourd fall from his hand and was about to pluck a second one, it came into his head that he was now neither hungry nor thirsty. And yet to repeat a pleasure so intense and almost so spiritual seemed an obvious thing to do. His reason, or what we commonly take to be reason in our own world, was all in favour of tasting this miracle again; the child-like innocence of fruit, the labours he had undergone, the uncertainty of the future, all seemed to commend the action. Yet something seemed opposed to this 'reason'. It is difficult to suppose that this opposition came from desire, for what desire would turn from so much deliciousness? But for whatever cause, it appeared to him better not to taste again. Perhaps the experience had been so complete that repetition would be a vulgarity - like asking to hear the same symphony twice in a day."  Lewis, Perelandra.

I concur wholly with this principle.  Sometimes even a long interval may not validate a repetition - I would love to repeat the walk I described in Euphoria but I doubt if the magic would work again even after so many years. Somehow forced repetition does not satisfy. The thrill in listening to Rachmaninov's second piano concerto wears thin if repeated too soon. The ecstatic first few bites into a crisp rhubarb crumble served with clotted cream dull in that unnecessary second portion (memories of last Sunday).

Without doubt we were created to enjoy delight to the full. But perhaps forced repetition is the divide between delight and lust.


20130429

Obedience


George MacDonald, fantasy writer par excellence


I said: “Let me walk in the fields.”
He said: “No, walk in the town.”
I said: “There are no flowers there.”
He said: “No flowers, but a crown.”

I said: “But the skies are black;
There is nothing but noise and din.”
And He wept as He sent me back –
“There is more,” He said; “there is sin.”

I said: “But the air is thick,
And fogs are veiling the sun.”
He answered: “Yet souls are sick,
And souls in the dark undone!”

I said: “I shall miss the light,
And friends will miss me, they say.”
He answered: “Choose tonight
If I am to miss you or they.”

I pleaded for time to be given.
He said: “Is it hard to decide?
It will not seem so hard in heaven
To have followed the steps of your Guide.”

I cast one look at the fields,
Then set my face to the town;
He said, “My child, do you yield?
Will you leave the flowers for the crown?”

Then into His hand went mine;
And into my heart came He;
And I walk in a light divine,
The path I had feared to see.

Obedience - George MacDonald

Such gut-wrenching poignant truth in economy of words! How I wish I could encapsulate what I want to convey in a similar manner rather than blather on and on...  (I come from a church background where multiplicity of words is almost a dogma.)

I suppose I was led to MacDonald by Lewis, possibly in his reference:

Turning to the bookstall, I picked out an Everyman in a dirty jacket, Phantastes, a Faerie Romance, George MacDonald. Then the train came in. I can still remember the voice of the porter calling out the village names Saxon and sweet as a nut—‘Bookham, Effingham, Horsley train.’ That evening I began to read my new book.

The woodland journeyings in that story, the ghostly enemies, the ladies both good and evil, were close enough to my habitual imagery to lure me on without the perception of a change. It is as if I were carried sleeping across the frontier, or as if I had died in the old country and could never remember how I came alive in the new” (Lewis, Surprised by Joy).

Finding a paper copy of Phantastes took many years - now it is available for free download on the internet. Of his other fantasy stories I suppose I love At the back of the North Wind the best as discussed elsewhere.

Macdonald was not accepted by the Christian status-quo in his time - this alone has tended to attract him to me. Some paint him with the heresy of universalism but this in-depth treatment seems to say otherwise. MacDonald is said to have burst into tears when the concept of predestination was first explained to him. Interestingly I, too, recoiled from the idea as explained to me by someone at college who took a hard, Calvinistic line.

Lewis regarded MacDonald as his mentor as is evident in his The great divorce.  In his preface to "George MacDonald. An Anthology" he says "I have never concealed the fact that I regarded him as my master; indeed I fancy I have never written a book in which I did not quote from him."  And of Phantastes he writes “After this I read Macdonald’s Phantastes over my tea, which I have read many times and which I really believe fills for me the place of a devotional book. It tuned me up to a higher pitch and delighted me.

I could go on and bore you with my favourite passages from MacDonald's writings. Maybe another time...

20130416

Euler



Euler, mathematician par excellence

In spite of what people say, I am not a mathematician. This is evident in that I can't play a decent game of chess. I enjoyed and excelled at O and A level maths but became unstuck at college level with divs and curls and wot-not.  And so I cannot eulogise over Euler as befits him.  A statement attributed to Pierre-Simon Laplace, another master in mathematics, expresses Euler's influence on mathematics: "Read Euler, read Euler, he is the master of us all."

But I do remember my fascination on meeting Euler's famous formula for the first time in PSS days

e^{ix} = \cos x + i\sin x \

which brought together so many threads in the A level maths syllabus - convergent series, imaginary numbers, trigonometry, logarithms and exponentials - just as the diverse characters are in the last chapter of a crime novel.  Substituting  pi for x we have the identity shown in the bottom right of yesterday's Google doodle:


20130414

Second use of new bike

Distance 35.2 miles
Maximum speed 29 mph
Average 10.9 mph
Route - not very interesting*, but some nice daffodils
Weather - supposedly high 15'C but windy so felt like zero
Highlight - hot bath on return home
Pictures - none
Track - HTC gave up half way, new battery is ordered

* Dunlavin / Baltinglass

20130413

Spinc and Glenealo Valley


Spinc from Upper Lake

Today I hiked the Spinc and Glenealo Valley trial (White Route) barefoot - with a group of youngsters (not barefoot) I had difficulty keeping up with. Scary signs of age.

And it was cold and very wet.  We walked through that white stuff in the picture.


20130412

Summer day


I found this poem whilst following a LinkedIn link and liked it...


The Summer Day

Who made the world?
Who made the swan, and the black bear?
Who made the grasshopper?
This grasshopper, I mean-
the one who has flung herself out of the grass,
the one who is eating sugar out of my hand,
who is moving her jaws back and forth instead of up and down-
who is gazing around with her enormous and complicated eyes.
Now she lifts her pale forearms and thoroughly washes her face.
Now she snaps her wings open, and floats away.
I don't know exactly what a prayer is.
I do know how to pay attention, how to fall down
into the grass, how to kneel down in the grass,
how to be idle and blessed, how to stroll through the fields,
which is what I have been doing all day.
Tell me, what else should I have done?
Doesn't everything die at last, and too soon?
Tell me, what is it you plan to do
with your one wild and precious life?


Running (barefoot) and hiking answers for me - at least when it is warm it does. But how can life be all holiday? For most of us it takes the major part of our lives working to pay the bills so that we can work.

"Don't aim at success--the more you aim at it and make it (your final) target, the more you are going to miss it. For true success, like happiness, cannot be pursued; it must ensue, and it only does so as the unintended side effect of one's personal dedication to a cause greater than oneself. Listen to what your conscience commands you to do and carry it out to the best of your knowledge." -- Viktor Frankl, Man's Search for Meaning.

20130410

Occam's razor


Eric Isaacson programmer par excellence

Occam's razor in the vernacular might be "Keep It Simple Stupid!".  William of Ockham was a 14th century logician and Franciscan friar. He wrote in latin but, roughly translated, Wikipedia has it as a principle of parsimony, economy, or succinctness used in logic and problem-solving.

I try to apply the principle in my work as an electronics design engineer. I often use Microchip PIC processors in my designs, mostly 8-bitters, and typically code in assembler. Recently I have tried my hand at 'C' (just the ANSI flavour) - apparently it is the "way to go" and, anyway, one's hand is forced by the need to use C-friendly libraries.  But I hate the verbosity and obfuscation of 'C'. What requires little thought and a few simple statements in assembler can consume hours of research and require far more typing in 'C'. In short it contravenes Occam's razor.

OK - I like the way 'C' encourages good structure and offers ready made functions to save one having to re-invent the wheel. But couldn't these good things have been provided in a simpler, more intuitive way? So I figured I would create a new language and call it 'Occam' - but I am too late - Occam already exists but is not at all the 8-bit job I was looking for.

'C' poses itself between low level (i.e. assembler) and high level languages. It's not that I have anything against high level languages - they have their place - just that I hate unnecessary verbosity, and not only in the field of programming.

Long ago in the heyday of MSDOS I purchased and used A86, an assembler for the PC. The author Eric rightly claims that A86 "is the finest assembler available, at any cost under any terms, for the Intel 86-family of microprocessors". No painful setup red-tape is required - you write your assembly statements, assemble and, hey presto you have an executable.  That's as good an example of Occam's razor as you'll get.


Shalom is often translated as 'peace' but means much more - well-being, completeness, wholeness, health, soundness, tranquility, prosperity, fullness, rest, harmony, the absence of agitation or discord. How is 'shalom' encoded in brain neuron-patterns?  Similarly, a high level programming language command like "draw a 3D cube with rendering" – who cares how it is encoded? Except that you do care at the hardware level I work at. I care about every bit and every micro-second and, for some applications, only assembler will fit the bill.

20130408

Analog


Robert A. Pease, analog designer par excellence

They say we live in a digital age. This age was dawning when I started in electronics and I had the privilege of being involved in some of the early work on digital TV and radio at Kingswood Warren.

The world we live in may be actually digital (quantum and all that) but for most purposes our senses interface with it, and electronic circuits emulate it, in an analog way. One notable exception - if you are young with good hearing and the night is quiet, you can just about make out the hiss caused by the random motion of air molecules hitting your ear drum. The ear is truly remarkable.

Electronics is increasingly digital. Just about any custom design I carry out will involve one or more micro-controllers.  A micro-controller is essentially a complete computer on a chip.  Some come as small as 1.3mm by 2.7mm and cost as little as $0.30. But at some stage most designs have to interface with humans or the world around us, and that generally means analog. Unless it is very high speed, designing digital is relatively easy - you just bolt functions together. Designing a good analog circuit is much more demanding.

Much honour is thus due to such gurus as Bob Pease and Jim Williams both, sadly, passed away.  Here's an example of Bob's writing style: I like the way he uses an ordinary phenomenon to explain a principle in electronics design.

I guess my inertial train controller was my first good analog design.  'Good' in that it was dead simple and very effective.



20130404

Clive Sinclair, slide rules and log tables




Clive Sinclair, entrepreneur par excellence


Long, long ago, when I was in the sixth form at PSS, calculators of the add / subtract / multiply / divide type were starting to become commonly available but were not allowed in school... Calculators, it seemed, were for the weak.

Instead we were taught long multiplication and division, and to use log tables in maths although in science we were allowed to use a slide rule. A slide rule works like log tables but is a whole lot easier to use.

If you know all about logs and slide rules, or if you are already bored out of your mind, then this is the place to stop reading.


If...


then, by definition,


Thus the exponent (aka index) x in the first equation is the logarithm to base n of y.  The clever bit comes as a result of the rules of indices, thus


Here I have changed the variable names (otherwise I would have run out at 'z'), and shown that when two numbers r and s are multiplied, their logarithms are added.

The same applies whatever the base n is.

So, back then, long, long ago, we had 4-figure log tables, or 5-figure if you were lucky (or had a lot of time on your hands). These were look-up tables for finding the logarithm of a number to 4 or 5 decimal places. The book would also contain tables for the inverse operation "anti-log" (which is one and the same as exponentiation) together with tables for finding the sine, tangent or cosine of an angle and their inverse operations, square and cube roots, and such-like.  A mathematician's ready reckoner. To multiply two numbers you first look up their logs, then add these together and look up the anti-log of the answer.

You show a book of log tables to today's youth and they won't believe that this is how we did multiplications and divisions.

The slide rule has logarithmic scales so that the logarithm of a number is translated into physical length - to multiple two number you simply move the sliding part (which also has a logarithmic scale for the second number) thus adding the distances and effectively adding the logarithms. The final value is read off using the first scale which thus takes the anti-log and gives the product.  Other scales are included for finding trigonometrical functions and squares or square roots.


You can get 3 figure accuracy from a slide rule if you are careful which was good enough for most undergraduate experimental work.




At college a friend purchased a Sinclair Scientific calculator - the first scientific calculator within reach of students. Although it only had 5 digit accuracy this machine was a wonder to behold. I bow to Clive Sinclair whose inventions have been truly prophetic even if they were not always wholly reliable.



Talking about Clive, the same friend owned a Micromatic - a matchbox sized radio - on which, during school lunch break, we used to listen to I'm sorry I'll read that again, a radio show which was a precursor to Monty Python.




When I started work at Kingswood Warren I was introduced to the HP35 which, apparently, was introduced in 1972 as the first ever scientific calculator but too expensive for the average student. It boasted a splendid bug in that it reckoned that exp(ln (2.02))=2.  This was corrected in the next model HP45.

These calculators had power-hungry red LED displays - liquid crystal had not been invented. Talking of LED's I remember a boy bringing an LED to school - it was the first I had ever seen and blew my mind: at last a source of light without (much) heat just like a glow-worm!

And talking about inventions - an interesting coincidence, for someone that works in electronics, is that the transistor was invented around the time or just before I was born.

So much has changed since then - the rest is history...

20130326

Is Google God?



Google was conceived in 1997 - today it is powered by over one million computer servers and processes over one billion search results daily. I remember the very first time I used Google - how much better it was that AltaVista at the time (having just checked out the latter I find it now comparable in speed and relevance).

Nowadays, where do you go to ask questions? The answer starts with ‘G-o’, and it’s not God” (Steve Wozniak November 2012).

People always make the assumption that we’re done with search. That’s very far from the case. We’re probably only 5% of the way there. We want to create the ultimate search engine that can understand anything. Some people could call that Artificial Intelligence.” (Larry Page, 2006).

And then there is Google-X Lab and who knows what secrets they have under wraps?

Good sci-fi is prophetic - with Google's vision and terms like "in the cloud" and "big data" in common usage can we be that far from Orson Scott Card's Jane?

Google search is limited by the repository of public human knowledge contained in the internet. Although it has become an almost assumed part of many of our lives, and although is invaluable in my electronics work, it does not do so well in answering questions of the soul. Try asking it about alternative medicine or biblical interpretation and you will get every view under the sun because, of course, just about every possible view exists under the sun. Typically you will then filter the results in your mind according to your personal beliefs and, hey presto, you find that Google supports your argument! Not very helpful.


When I was first introduced to the TTL Data Book, long, long ago, I was impressed by the common TTL standard that enables an arbitrary selection of chips to be connected together. Thus using only TTL MSI chips I was able to create a simple computer that calculated standard deviations and correlation coefficient between two channels of electronic data. At the time it reminded me, how much more now, of "Behold, they are one people, and they have all one language, and this is only the beginning of what they will do. And nothing that they propose to do will now be impossible for them."


Back then these guys apparently didn't get to finish their edifice...

20130324

Small dogs

You know, those miniature dogs that run about yap-yap-yapping and snapping at your ankles. Last weekend I was out running and was ambushed by the like. Meg took the brunt of the attack but it placed me off guard and as a result I stubbed my big toe on a stone and took the skin off. It has still not properly healed over so is stunting my barefoot running habit. Really, people ought not to let dogs like this out in public places. I cannot imagine owning such an antisocial dog!

The Irish are renowned for not being able to say 'no'. You ask for a plumber and he'll say "Sure, I'll be right around". You wait - hours, days, months. You ring him and he says "Oh yes, I got delayed, but I will come". Only if you are bold enough to take the man to task will he admit you were far down his priority list, indeed probably had no intention of coming at all. But he didn't like to say no. I regret that this way of doing business is rubbing off on me.

In contrast I know a mother and both her children who can say a blunt 'no' with no shame, no discussion, no yielding point to just about anything they choose. Years ago, when teaching one of the children, I suggested he might read so-and-so. "I don't read".  But you ought to, it would really help you.  "I'm sorry but I don't read books".  Full stop. Where can you go from there?  Or, just yesterday, I suggested making an appointment earlier in the day, say at 8 a.m. "No."  No discussion. No offer to compromise or bargain.

I wish I could do the same. I find it so hard to say 'no' without bolstering it with all manner of ifs and buts and excuses. I suppose because I feel ashamed to admit that I cannot or do not want to.

20130322

How to start barefoot running

Thought I'd give some quick advice purely from my own experience:

1. Believe that running barefoot is very possible and actually enjoyable, not to mention cheaper

2. Don't expect miracles - it's going to take a while for your feet to get hardened during which time it will hurt a bit and you will need to persevere

3. Take your runners with you to start with - try a patch barefoot and when you can take the pain no more, or the surface gets to knobbly, use your shoes for a bit

4. You need to run regularly, of course. I run three or four times a week and each time for at least three miles.

5. Don't be fazed if you stub your toe: you'll find you do this less and less as time goes on.  Occasionally you will be attacked by a thorn and prickles - so equip yourself with tweezers, pliers and antiseptic for extraction - but as your feet harden you will be afflicted less and less in this way.

6. As time goes on use your trainers less and less until you are ready to leave the shoes behind for good: from this point on you will never look back.

7. If cracks appear as the skin thickens use some moisturiser cream e.g. Silcock's Base, especially between the toes. Mud in particular tends to dry out the skin.

8. Your feet will of course get dirty, that's par for the course. And cold in winter - I find there is no difficulty running barefoot down to freezing point, but it gets uncomfortable below that. You will of course look where you are stepping and thus can avoid landing in nasty stuff. Provided the skin of your feet is not broken you should come to no harm.

9. By all means check it out on the web but don't believe these sites that imply that you will soon be able to run on any surface painlessly. It hurts when you hit a stone, especially if you strike on your heel. On every run I take it hurts a bit on some surfaces and I've been totally without shoes for a year now.

10. Don't be surprised if you become the subject of ridicule and don't expect anyone else to join you - so far I have never seen ( except in photographs) or knowingly met anyone running barefoot.

11.Without doubt running barefoot is enjoyable, liberating and also good for you in that it encourages you to land on the ball of your foot and thus reduce injury.  It is also cheaper, even after paying for the Silcock's Base and tweezers.

Floreat barefoor currit

20130321

Smarties



Conversation at dinner time this evening: I say Smarties are far superior to M&M's. Apparently not everyone agrees. And fruit gums (preferably the ones in fruit shapes) are better than fruit pastilles. I used to treat myself to a box when going to the cinema - much better than noisy popcorn. And wine gums (Maynards please) are better than jelly babies. How can anyone disagree with something so obvious?

Does anyone else hate the modern concept that going to the cinema to watch a film is an opportunity to chat and crunch pop-corn or rustle crisp packets? To me a good film on a big screen with surround sound is sacrosanct. That's why I pay for the experience.



20130317

Rupert Bear



Rupert Bear Annual 1962

In a recent visit to the inlaw's house I found myself reading and reliving again a copy of the 1962 Rupert Bear annual. I was 10 years old when I read it first and I find I still remember the stories in detail.

There are two types of people in the world and only one love Rupert Bear stories. So what has made these stories appeal so much to me?  As a clue I admit to reading only the rhyming couplets and not the verbose story line at the foot of each page.

I love the Alfred Bestall's countryside, I love the sense of wonder and mystery the plots evoke. Above all I love the childhood freedom implied in the stories: Rupert's parents are cast as loving and caring and yet he is left free to explore miles of countryside without adult intervention. I identify with him as my eye explores the depths of pictures like these I photographed from this annual:


Frontispiece, 1962 annual


"And sees a group of trees he knows"

"The rabbits too have heard a sound"

"Jock knocks the ball high in the air"






20130304

Football

What football team do I support? The closest I can get to answering this is to claim Newcastle or Man. United on behalf of avid supporters I happen to know for whom it is perfectly normal to say "we scored" or "my team". To be truthful I neither support any team of any sport nor can I quite comprehend the concept of doing so. Mind you, I have played football and even enjoyed it in between loosing concentration and hitting the ball the wrong way or becoming thoroughly bored, but I did it solely for the sake of the others.

And yet... "Football is associated with passion, emotion, excitement and dedication across Europe. References to extreme emotional experiences at football games characterised all aspects of discussions with fans – some referring to the 'pure joy' and exhilaration of being at football games. Such is the intensity of the experience that two thirds of fans have cried at football matches – mostly through joy, but occasionally because of despair."  (SIRC)

Doubtless that makes me odd (along with running barefoot), but I learnt to live with that accolade from an early age. But is it so different from me insisting that barefoot is the best way to run, yellow is my favourite colour or claiming that Bruckner's 8th is the best? Is it just that we all like to carve an identity, to try to define "me"?

Some find their identity in patriotism. I used to think that "the English are best" - as so cleverly caricatured by Flanders and Swann -


until I moved to Ireland and heard their side of the story. I still love the people of and places in England, but then I have come to love Ireland too and what could be better than to live within walking distance of forests, a lake, a  river you can swim in, and mountains?

So who am I?

20130303

Hollywood

Today's run was a repeat only this time with a camera because I wanted to try to capture the exhilaration of running along the grassy rise which is called Knockroe. My route takes me from Hollywood along part of St Kevin's Way to the south end of Knockroe which I then climb to return back to Hollywood. The total distance is getting on for 9 miles.


Lugnagroah

Golden Falls reservoir

Barretstown in the distance


Down into Hollywood woods


The ford in Hollywood

A good place for a meal

The Hollywood beginning of St Kevin's Way: a statue of the man himself on the outcrop dead-centre

I have noticed the charred tree stump before: today we have the makings of a bonfire around it which is all very strange...

Ascending Knockroe looking north, St Kevin is shining white in the sun to right of centre

I assure you that the dog does not chase sheep, but I guess they don't know that!

Over the hills and far away


It's hard to get away from St Kevin

Looking south-west from Knockroe

Hollywood in sight, and St Kevin's way below, the castle motte in middle centre

About to descend down into Hollywood again
When my children were children we used to buy them sweets here. Sadly the post office is now closed though is opened as a novelty for the Hollywood Fair

Knockroe, looking south east from the R756
  
A welcome sign of  Spring along the road from Hollywood

One of two high-voltage lines from Turlough Hill


This part of Co. Wicklow is sheep country

Blessington reservoir