Originally Posted by
compressor stall
They are useful to a point. If you don't have the required acceleration for any reason, then those numbers are also useless.
And hopefully you would abort for engine problems well before V1 in that case.
So instead of a current readout of stopping distance etc., the computer should take the acceleration measurements it has, compare it to the expected acceleration, and then warn/alert if it's below a certain threshold so the crew can abort and troubleshoot long before they're near V1.
The question isn't "how fast can we get with engine problems and still stop", the question is "how quickly can we recognize them reliably so we can abort ASAP".
(could also be incorrect weight/temperature/altitude problems, ofc)