(2) Important pattern #2: If you look at the NASDAQ chart from 2000 to 2003, you'll see there were ~5 "false dawns" where it looked like recovery was happening, until another stage of the collapse hit.
(3) Important pattern #3: ~Every tech CEO knew he should do a single deep layoff to prevent ongoing morale damage from subsequent layoffs. He then did an initial ~10% cut, and then ~6 more 10% cuts by the time the carnage was over.