CHECKLIST: Structure a thread that doesn't die at tweet 2

CHECKLIST: Structure a thread that doesn't die at tweet 2
The drop-off between post 1 and 2 is where threads die. Build against it:
— Hook tweet must stand alone and earn a like with no continuation needed
— Put the payoff hint in tweet 1, not 'a thread:' with no promise
— Tweets 2-4 each end on an open loop, not a full stop
— No external links until the final tweet (links mid-thread suppress the whole chain's reach)
— Self-reply within 2-3 minutes so the thread registers as one unit
Confirmed: per-tweet engagement drives thread distribution; readers don't auto-flow downward. Rumored: exact decay curve. Optimize tweet 1 like it's your only tweet, because for most viewers it is.