Just because you can't see it now doesn't mean it wasn't there

Have you ever went to grab something that you had seen many times before yet now it isn't there? You search your memory bank to see if that is where you saw it. You are certain that is where you saw it. You look all around the area thinking the only logical answer is that it must have fallen close by. Since you need it you keep looking elsewhere yet keep returning to look where you last saw it. As if it was just temporarily invisible but now you will be able to see it sitting right where you remembered. As you keep searching other places in your house you finally find it. You try to figure out how it could have been moved there. Then a memory pops up front and center in your mind. You suddenly remember moving it there so you wouldn't forget where it was later when you need it. You realize that if you would have just left it where it was you would have found it a long time ago.