The more we get used to seeing objects a certain way, the easier it is to take them for granted. After all, much like movie editing or internet service, the only time we notice the qualities of these everyday objects is when something changes.
At first, we might be inclined to think that a noticeable difference is just the mark of a defective product. But when every other one in the shop has the same strange feature, it soon becomes clear that it was added on purpose.
From there, it's hard not to become curious as to why this change happened. And while we can't solve all of the universe's little mysteries, the internet can at least help us knock out a few of them.