He wrote a computer program to automatically generate slogan t-shirts for sale and then to print them on demand. Overnight his catalog of available shirts went from 1,000 to over 10 million. Best of all, he only had to make the shirt after a customer ordered it, so there was no inventory. “He gathered 700 verbs and imported them en masse — but says he didn’t carefully go over the list.” What could possibly go wrong? Oops. You can imagine where this ended up: with death threats and Amazon.com kicking him off the site and refusing to pay for $40,000 in orders.