When did estimates turn into deadlines?

I learned something important early in my career: the first number you put out will be remembered.

Unfortunately it’s often true. People keep saying: "but didn’t you initially say X?"

"Sure I did, but I have new knowledge" won't always work.

A nasty side-effect is that people who are aware of this shy away from giving you numbers.

> the first number you put out will be remembered

This is called anchoring effect, a psychological bias.

I think you meant "anchoring bias": https://www.scribbr.com/research-bias/anchoring-bias/

Anchoring effect is something related but subltley different: https://en.m.wikipedia.org/wiki/Anchoring_effect