He Kept His Client List Small on Purpose

Brent Kirby wanted to be a pilot. His grandfather built gas-powered
model planes, the kind you take out to a field and fly, and Brent
went along for all of it. He inherited two of them when his
grandfather died and has never flown them, because he couldn't stand
to crash something that took that much work.
What he did instead was take things apart. Transformers, remote
control cars, anything with a mechanism, just to see how it moved.
He was the art kid, completely right-brained, and math was torture,
so he got his high school math credits by taking a programming class.
He's been building…