I frowned and tilted my head in the direction of the suit, glancing at Marvin. He replied with a baffled smile and a shrug. "Don’t ask me, Bob. Replicative drift seems to be accelerating. I think we’re approaching fifteen to twenty generations, and it’s no longer just a matter of enhanced or suppressed attributes of Original Bob. The differences are accumulating, and some clones are going in completely new directions."