Originally Posted by
tdracer
That's fine on paper, but what would you do if, seconds after you selected reverse, a vehicle or another aircraft appeared on the runway? Just go ahead and run into it?
….or try a go-around. Thrust reversers stow, then build up to TOGA thrust from idle once again, slowly get airborne and clip the obstacle at high speed.
If reverse has been selected you stay on the runway and stop. If the obstacle is so close that you can’t stop in time with maximum braking then you most certainly can’t miss it by trying to get airborne again.