This is wonderful, thank you for sharing it. Were there any obvious differences between the two camps in terms of performance, career satisfaction, tenure at the company, etc?
The sample size is about N=18 for the anecdote so it’s hardly definitive. The ones who didn’t engage typically left after 12 months, maybe 24 tops. It’s not a perfect indicator. Some people in the morning are stellar performers but also want to sit and enjoy a cup of coffee and read the news instead of grinding out computer-realizations of discrete path integrals or whatever other Monday morning shenanigans.