In the original draft I was 27 and Peter was 55 in the script. Thats not the same as a guy in his 40s and a dad in the end of his 70s. Its a different point in both our lives. – Paul Reiser
In fact, I had the idea because of Peter Falk. I saw my dad watching a Peter Falk movie and something clicked in my head. I gotta go make a movie for Peter Falk and me. – Paul Reiser