Walking 20 miles daily and hauling heavy bales can develop significant strength, particularly in the left hand.

“but the interesting thing is by doing the work on the docks because he doesn't have the money for bus fare or cab fare to get from his home to the docks he's walking every day 20 miles ridiculous he's working as a stevedore you know hauling giant bales and stuff like that even with a broken head he builds up this strength especially in his left hand he had never had a left hand before the right hand is broken so he's building strength all of these things it sounds like some kind of fairy tale or something may prepare him in a way he hadn't been prepared to seize the moment”