'Sims don't plan anything' says former Sims 4 developer, though he always wanted to program them to: 'it's always shot down, rightfully so'

At their core, sims are hedonistic little squirrels constantly meeting their needs one moment at a time without any ability to think through a sequence of actions. That's by design, one Sims 4 developer says, but he always wanted sims to have a more thoughtful approach to their own lives when left to their own devices.

David "Rez" Graham is now the director of game programming at San Francisco's Academy of Art University and the developer on his own unannounced game, but served as lead AI...