As a kid, I once started to look at a book on how to draw things. It was probably filled with reasonably good advice, but I didn't keep looking at it for very long. Maybe I looked at it as a possible purchase (or to ask for...) but the information didn't make sense to me. What it did was start off with drawing lines and circles and ovals to rough out a shape of a person or animal. But that wasn't the shape of the thing being drawn! It had all this extra crap. What good was that? And since it didn't make sense, back on the shelf it went.
Of course, those construction lines weren't a real problem. They were meant to be a framework for later lines. The later lines would be inked and after the ink dried, the construction lines could be erased. The problem was that I did not know that and the text did not explain that right off. So, to me, not aware of the sequence of events, it looked like so much nonsense. Had there been even a short summary of procedure right off, the results might have been a bit different.
It's not just books on drawing that have this problem. When I first looked at electronics, at the very basic part, there were endless exercises using groups of resistors. These don't seem to do much. They limit current. They generate heat. But they're not exactly exciting and a circuit of a battery and a bunch of resistors just seems wasteful. It wasn't until I read a book my grandfather had given me that I got something of an explanation. It brought up the question I had, "Why all this fuss with resistors?" and answered it by saying they represented loading, and were just easier to consider than, say, motors or lights and the more interesting would be coming along soon enough. Elements of Radio started off differently and introduced each new component as a need for it was explained. This made even more sense.
I am not blaming the flaws of one book for my not drawing things. Had I been as determined about that as I had been about other things, one poorly explained text would not have mattered. It's just an example that getting into the fiddly details of how to do something, without explaining the why, can cause confusion and with it a loss of interest.
no subject
Date: 13 Jul 2004 08:01 (UTC)no subject
Date: 13 Jul 2004 08:17 (UTC)Electronics, likewise, begins with Ohm's law, and to understand how Ohm's law works, you have to look at resistances or loads in parallel, series, and mixed circuits. The diagrams without the text would look rather pointless. The text would explain how the mathematics of Ohm's law are applied. It is virtually impossible to design even a simple circuit, like a one stage amplifier or a radio signal detector, without an understanding of Ohm's law and the way in which circuits can be analyzed by representing them as loads in series or parallel.
Overviews and summaries are all fine, except that too many people try to let the 'executive summary' stand for the entire work and assume that if they skimmed the summary they now understand the whole issue or topic.
no subject
Date: 13 Jul 2004 09:00 (UTC)...it sounds to me as though you looked at the pictures and skipped over the text...
Considering my (lack of) age at the time, it is quite possible that that was the case. What struck me was that years later I still hadn't realized what the method was. Perhaps I simply had thought about since. It wasn't until encountering
kinkyturtle on IRC that I got it. I suppose it bugs me a bit as it seems like it would be obvious, but obvious is a very dangerous word. Post-explanation, many things seem to be obvious. It also amuses me a bit that a couple one-page "How to draw (character)" gags in the Looney Tunes comic are almost the overview I could have used. They lack many details as the point is not how to draw the character but the screwball interactions on the page, yet the one key piece is there.
I will agree with your second paragraph, but will again note that Elements of Radio (by Marcus and Marcus) managed to introduce components and behaviors on as-needed basis - and the resistor came in fairly late. Ohm's law certainly came up, but when it did the reader knew, and felt, the need for it. That sort of thing is probably why that book made such an impression on me.
no subject
Date: 13 Jul 2004 10:28 (UTC)no subject
Date: 13 Jul 2004 12:40 (UTC)Explanation for us programmers...
Date: 13 Jul 2004 13:02 (UTC)