demanding things faster than people say they can do them

I do wonder, in some cases, if the actual sequence of events is more like this.

Captain: How long will it take to fix?
Engineer: [thinking in terms of "fix properly so it stays fixed and doesn't introduce technical debt"] Two days.
Captain: [thinking in terms of "fix well enough that we don't blow up in half an hour's time"] You have half an hour.
Engineer: [does a hasty and horrific bodge barely adequate to prevent explosion]
Day: [is saved]
Engineer: [puts in a day cleaning up the previous fix and two more days fixing it properly, once the fuss has died down]