Our temporary memory is bad. Memories that are supposed to last a couple hours or a couple days, but not forever, end up lasting a few minutes.

That means if we put something somewhere, we easily forget where we put it and it ends up lost. If that place is in public, that item might be lost forever.

If it's in our own home, it'll show back up eventually, but not when we need it and it can easily end up lost again. I spent a significant amount of time over the summer looking for my bike lock. I found it yesterday while looking for my glove to go skiing.

Having a messy house (also a side effect of symptoms) compounds this by facilitating things going missing.