Data Depreciation

Is it true that data slowly becomes crappier and crappier the more you copy or transfer it? I did notice a kilobyte count difference in a couple of my image folders that contained the same images. If this is the case, how do transferred video games remain functional? And is there a way to prevent data depreciation? (Assuming it exists.) And is it significant enough to worry about?

And is it significant enough to worry about?

no, quit worrying.

It's true if you are dealing analog data.

Animefan, perhaps keeping questions to yourself sometimes would help.

Are you using floppy disks or an ancient data casette?