Thanks for the explanation, guys.
I still think it's a pretty stupid oversight for a multi-million dollar epic. It's obvious that there were a whole bunch of people who weren't sure if there were actually two brothers, or if Eli and "Paul" were the same guy. They could have shot one scene with the two of them (use a double, shoot one from behind, do it with computer graphics. . .) and we wouldn't have spent 2 hours wondering if we were missing something.
I still think it's a pretty stupid oversight for a multi-million dollar epic. It's obvious that there were a whole bunch of people who weren't sure if there were actually two brothers, or if Eli and "Paul" were the same guy. They could have shot one scene with the two of them (use a double, shoot one from behind, do it with computer graphics. . .) and we wouldn't have spent 2 hours wondering if we were missing something.