On Wednesday, November 6, 2019 at 7:06:04 PM UTC-5, wrote:
I have observed that, over time, people dip into the margins they were taught.
They become comfortable with the new lower margin.
Then they slip a bit more.

Yep, "normalization of deviance".
We lost a space shuttle this way.

Eventually they either figure out they are going too far,
somebody calls them out, or they scare themselves or even crash.

Or worse, they don't scare themselves, become "experts",
and encourage others to lower their margins. Then call them wimps
if they don't.

Thanks Hank!