Imagine how much food waste there will be if your fridge has an absolute adherence to the dates printed on the label.
Plenty of people have that problem these days. Living with 'young 'professionals' in shared housing for a while you see awful lot of stuffed dumped (in the wrong bin I might add) that's a mere day passed and nothing wrong with it. When I was a kid, there was an open jar of jam that'd been in the cupboard at least six years, we just scrapped the blue off every time.