Number three is a clever, “logical” Reverse — based on WORD-PLAY
( substituting “Modern Man” for “Cave Man”).
Number two is More VISUAL, turning the “rock” into a large, heavy
Ring. It also adds the “very- Human” elements of superior status and jealousy thru Ostentation (i.e., EXAGERATION). ( “Did you see the Size of that Rock ?” ) There’s a lot “packed into” this caption.

Number One is Very Clever –with an unusual , original definition. This makes viewers feel Superior — because it tells us the two Cave Men do NOT know what THEY have created ! Plus that
wonderful PICTURE in our minds — “watching” them try to get
(carry ?) that thing down the hill. Another hard-working caption.