Managing Errors and Defects in Development

First, the tragedy of errors versus defects. Errors are mistakes you catch before

release; defects are the ones your users find and then email your boss about.

Same mistake, different pain levels. Defect amplification is like a horror movie where one

tiny bug multiplies into a whole ecosystem of new bugs as it slides through each development step.

Without reviews, you get a waterfall of issues and end up shipping defects. With reviews,

the bug population drops dramatically, and your cost shrinks instead of exploding. Pair programming

is two people sharing one computer like a strange academic friendship bracelet. One types,

the other judges silently. They switch roles. Errors get caught immediately.