Clairnoyance

I realize that games like the Fallout and Elder Scrolls series are infinitely complex in their physics and AI, where a million entities are on screen at once and all interacting with eachother, and it's pretty cool what the games can accomplish with it. But I am still going to get frustrated and yell at my computer when the corpse I was going to loot flies across a canyon because my dog stepped on it wrong.
I'm willing to let the AI problems I've encountered slide when I can, but sometimes my immersion is irreparably damaged.