Originally Posted by
FlightDetent
That is an important angle. There was an action slip incident where upon getting airborne the PM retracted the flaps instead of raising the gear.
Airbuses more often than not depart with F=1, imagine the statistics if the call for retracting them had been Flaps UP as opposed to today's Flaps ZERO.
While acknowledging my personal bias, I'll agree that there may be something there. I'd argue though, that it's pretty unlikely that it'll be a problem given that hundreds if not thousands of flights operate(d) every day with the "flaps up" call.