chapter

4

Make It Fail

“There is nothing like first-hand evidence.”

—SHERLOCK HOLMES, A STUDY IN SCARLET

War Story. In 1975, I was alone in the lab late one night (it’s always late at night, isn’t it?) trying to solve a problem on a TV pong game, one of the first home TV games, which was being developed at the MIT Innovation Center with funding from a local entrepreneur. We had a practice-wall feature, and the bug I was trying to solve happened occasionally when the ball bounced off the practice wall. I set up my oscilloscope (the thing that makes squiggles on a little round screen in old sci-fi movies) and watched for the bug, but I found it very difficult to watch the scope properly—if I set the ball speed too slow, it bounced off the ...

Get Debugging now with O’Reilly online learning.

O’Reilly members experience live online training, plus books, videos, and digital content from 200+ publishers.