Is Gordon a human being?
Have the man and Gordon seen each other at least once?
Is there anything unusual with the trash on that particular day?
Is there anything unusual happening at home when Gordon is out on that day?
Is Gordon aware that he is making the man lose that huge sum of money?
Is the man keeping a close eye on Gordon?
Is the wife related to the man in some way?
Is there someone else involved besides the wife, Gordon and the man?
Does Gordon take out trash in the same manner everyday? (ie he does the same thing besides taking trash out)