i will describe what happened to me several years ago....
after coming home after shopping for food, I put some food items in the fridge. among them there was a yogurt. next day I wanted to eat it but it wasn't there. since I know that sometimes you may look at a bigger picture ( in this case the inside of the fridge with many things inside) and do not notice certain details ( a yogurt cup). So what I did was that I took all items out of the fridge, one by one, holding each in my hand and checking if it was yogurt..
None of the items was yogurt.
I put everything back in the fridge.
next day I opened it and the yougurt was there....