What if the boy was assumed innocent and Fonda started asking questions?
It seems to me that 12 angry men is so popular partly because of the 'happy end." Now what if every juror thought the boy was innocent and Fonda wanted to talk about it? Yes, the facts are supposed to determine the case, but didn't they do that already at the beginning when 11 voted guilty? What if one person could persuade others to switch to guilty using certain interpretations of the facts?
It takes one persuasive and eloquent talking leader type to heavily influence the bunch. Could this movie have also portrayed a reversal of not guilty to guilty?