The idea grabbed him and I let him lead. Backs against the kiosk wall, staring out at the drizzle but not seeing it, we analyzed a safety pin and how to lay the groundwork to describe it. He unfastened the pin from his haversack, and using it as an exhibit, we did a parts breakdown, recalled what we could about the range of popular sizes; we estimated raw materials requirements per thousand units; debated how to cut the pin retainer clip from flat stock and form it around the wire firmly so that a child couldn't separate one from the other; touched on features for machine tools to fabricate safety pins; then jumped to the economics of designing robotic machine tools to mass produce and corner the safety pin market.
We delved into designing a pin with enough stiffness in the wire so that the pointed end would not bend out of the clip head and keep the tip from accidentally disengaging; we laughed over deburring the parts so that Mom's fingers and the baby's fanny wouldn't get scratched, and quickly agreed on the need to coat the pin with a rust inhibitor to protect it from the corrosive effects of dank cloths in warm places. We explored packaging, marketing and replacement factors.
By now his hair was almost dry and he finger-combed it spikey.
'Hey, ol' man,' he said, 'this is a good rap, but it's only a safety pin.'
'Don't knock it,' I replied. 'Safety pins, in one form or another, have been industrial and household tools for centuries and will be for many more. Anyhow, we're using it as an example, the same principles apply whether it's a safety pin, a computer, TV, or space ship. Getting back to your part of the job, when you've got it all together, and understand it and the customer's needs, then you're close to starting the writin' job.
'Based on who wants to know, you might need to spell out what the parts are made from, their dimensions, the diameter of the spring loop, and the wire's bending limits. You might need to describe the integrated clip head and the pin shaft and how they were attached.'
He stared at me, and his eyes widened in wonder at the boundless vistas
I had just opened. He was far beyond safety pins.
'If you're interested in technical writing,' I continued, 'keep in mind that collecting data and understanding it precedes the mechanics of writing.' I paused. 'And when you do write, whatever you're writing about-a safety pin or a space rocket, do it with such precision that what you come up with can form the image you want in the mind of someone who has been both blind since birth and incapable of feeling anything with his or her hands. That's the test.'
The look of discovery was replaced by skepticism. 'Aw, c'mon, man, that can't be the real world for technical writers,' he said. 'People who use tools learn by doing, or they follow a book. They see what they're working' on and feel things with their hands.'
'Let's think about that,' I said. 'Millions of people who see poorly, or not at all, or who have other sensory problems, use precision tools all the time. Many of them use tech data recorded on audio systems or in Braille. The entire field of communications to bypass sensory limitations is just beginning to open up; it'll be part of your world. Data in dozens of arrangements, for design, training aids, or operating instructions are needed by folks who, very often, haven't used the equipment before or who, for some other reason, need specs right there, alongside, all the time. In this world of thousands of languages and dialects, and physical and mental limitations beyond counting, even basic tools, like a safety pin, need to be understood all along the line from designer to user. Understanding means communications; think about it.'