In this episode Phoenix talks about how bullshit the title of this episode is. If they are 'people' then yes they have to be alike but when you're on Mars, why would they be people? Anyway, he explains it better in the episode. He also talks about how he wants to start calling him Rowdy Roddy McDowall and how he would have been an insane person to be around. He also calls Roddy the first Crispen Glover. If you watch the TZ episode, you'll understand.