I wonder how often, if PF is selecting reverse, the reverse selection is "fumbled" because the PF "misses" the reverser levers because he is (hopefully) looking out the window.
Bloggs, I know of at least two 747 runway excursions when the pilot only grabbed three T/R levers, then managed to nudge the fourth throttle forward while working the T/R levers. Both resulted in the 747 doing basically a 270 deg spin as it left the runway
.
Fortunately, no serious damage or injuries resulted, although I suspect there were some soiled undergarments
