In the beginning, the STALL WARN was WARN, not a STALL. There were no airframe cues for STALL, Instruments came later on the screen. There is no Alarm for STALL. ........(Differentiated from WARN) AND Airstream noise is atypical at STALL. (It signifies "crazy speed", at least to the pilot). And the variety of crazy speed he had was not taught, he had never experienced it, nor entertained it in a bad dream.
One needs those cues, AND instruments. Especially when key instruments have gone South.