CEO: so how long would this take?
Me: Me plus another engineer... probably 4 weeks.
CEO: What if I give you XYZ(principal engineers from infra team)
Me: Wait... no i need a full stack engineer.
CEO: okay fine. I'll give you 3 engineers, can you get it done in 2 weeks instead?
Me: No... some of the work cannot be parallelized.
CEO: okay.
....a week later
CEO: I thought about it, what if you work days and night, and also the weekend, can you get it done?
Me: nnlnn