What’s common knowledge in your field but shocks outsiders?

The project manager’s fallacy.

Exec: What was your estimated duration for Project X?
PM: 2 months
E: And how long did it take?
PM: 3.5 months
E: Project Y is exactly the same as X?
PM: yup.
E: How long do y…?
PM: 2 months
Reposted from Peter Sagal
What’s common knowledge in your field but shocks outsiders?

Not everything you think should be said out loud.

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