On 25 June 2013 20:07, Tony Duell <ard at p850ug1.demon.co.uk> wrote:
Unlike a lot of people these days, when I find I
want to do somethign
that I don't know how to do or don't have the skill to do,my reaction si
nto to give up, but to learn how to do it and to practice until I can do
it.
You have told me that you cannot drive or ride a bicycle, Tony.
It is ture that I have said that, and what I said was true. It still is.
Explain to me how this commendable attitude of "I
can't do that, so I
will learn" applies to these activities -- daily activities for
You ahve misesed out the 'when I find I want to do something...'There are
plenty of otehr things I cannot do. I cannot play any musical
instruments. I cna't run a marathon. I can't read Russian (or Japanese,
or...).. SOme of those things will, Isuspect always be impossible for
me. I might decide I wish to learn another human language at some point.
But at the moment I don't feel the need.
I think there are several parts to this answer...
The first can be illustrated by a trivial example. I have a Creed 444
teleprinter (aak 'Telepritner 15') which is currently set up for 75 baud
working. I would prefer 50 baud. Now the buad rate is set by the
reduction gear ration betwee nthe (synchronous) motor speindle and the
layshaft. At one time you could buy a pair of gears to get 50 baud, but
alls ITT-Creed are no longer around.
Now, these are what are known as 'skew helical gears; The 2 shafts are
offset and at right angles ot each other. At this stage I do not know the
gear ration I would need (and hence the numebr of teeth), I do not know
what angles to gut the teeh at, and I have never cut a skew helical gear
in my life.
But my intention, when I haev enough time to work on it (it's a private
project, I can do it when I like), is to find out how to design skew
helical gears, work out the ration I need, and have a go at cutting them.
The first attempt will be a mess. So I will try again. And a gain. That's
how I will learn.
OK, that explains my attitude to things I want to do.
Now, as to trasnprotation.
I can't see any time when being able ot ride a bicycle would be useful to
me. I live in London. There is reasoanble public transport. The only
times I would need my own transport would be either if public transport
did not go where I wanted to go (and cixce bicycles are not carried on
London buses or undergroudn trains, it is hard to see how having a
bicycle would help here, presumbly the place I want to get to is a lon
way for here) or becuase I ahve something large and heavy to move, again
a bicycel is not going to be much of a help.
Now for the car. The problem is cost. Motoring is not cheap. My fatehr
had a small-ish car. He had not been responsible for any accidents for
many years. And yet he paid around \pounds 100 per month for insurance.
For me, if I learnt to drive and was a new driver, it would be
considerably more. Add on the cost of fuel, spare parts, oil, etc (OK,
there would be no servicing labour charge, as I'd do it myself), amd the
cost would be ridiculously high. As it is, I pai under \pounds 100 per
month for a London bus pass. That suits my needs at the momnet.
_If_ my circumstances change i na way taht a car would be useful, then I
would seriously consdier learning to drive.
Nor for classic computers and repairs.
COntrary to popualr beleive, I do not feel that everybody needs ot be
able to solder [1]. I don't ever feel that everybody here needs ot eb
able to solder. If your interest in in classic computer software and you
tun in under one of the excellent emultors that are avaiable, then that's
fine. You don't need to solder.
BUT if you want to run the original hardwere then you have to accept that
it will fail sometimes. Yes, I find classisc computers to be relaible in
general. But the do still need repairs from time to time. Everything
does. And I don;t know of any company that wil ltake on such repairs.
Owing to the laws i nthe UK, it would be difficult to set up such a
company and make a profit (the cost of complying wit hthe regualtions
would exceed any money you might make). So there are some things you wil
lahve to do yourself. You mioght get lucky and find an enthusiast who
will do the job for you, but such people tend to do it from the goodness
of their heart and do such one only if they want to and only when they
want to.
There are of course plenty of people here (and elsewhere) who will hlep
you track down the fault. But nobofy can replace an IC over an e-mail
connection. I migth be able to suggest the right place to stick the
'scope probe, and hlep you interpret the wabveforms, but in the end, when
I've said that 'THe 7474 flip-flop at location U17 is defective), YOU
have to desolder that 14 pin IC and solder in a replacement.
Now, I beleive you can ride a bicycle. I do not know if oyu can drive.
But I am conviced that anybody who can do either has enough use and
conordination of their hands and good enough eyesight to eb able to
solder. It is just a mater of practice.
[1] Although at one time it was expected taht people could solder. I have
user manuals for consumer audio equipment up to the 1970s whcih give
instructions for soldering wires ot the input cable, changing resistors
inside to set input sensitivities, etc.
billions of people, skills that would be very useful
to you almost
every day.
Just out of curiousity, since I have never been anable to get to a place
I wish to get to (at least not a place wheee having a car or bicycle
would help), how would I find these skills useful 'almost every day'?
-tony