[Houshalter]

Most video games do stuff like that. It is necessary to some extent for the reasons you say. My issue with GTA is they do it excessively. A car that I just parked, 30 feet away, should not disappear when I turn around. If it disappeared after an hour, or after travelling a mile away, that would be much less restrictive.

[yyhhsj0521]

Skyrim does it better in my opinion. It resets a block after 2 game days (144 minutes playtime, and waiting, sleeping and faster travelling make time pass faster). So you can leave the loot that you can't carry in the dungeon, and after you get back to it, it would still be there. So it feels more "realistic".

[semi-extrinsic]

I'm pretty sure the reason why they prune the memory tree so aggressively is that the storage requirement is proportional to the "memory radius in spacetime" cubed (or worse).