Cracked pays people to make smart memes. Visit the Photoplasty and Pictofacts Workshop to get in on it.

Time is a fairly wild, abstract concept. It's pretty easy to take for granted: It passes, things change. We figured that's a shame, so we asked readers to find us images that demonstrate how strikingly different things used to be, compared to the way they are now.

Or how strikingly the same they are. That works, too. Here's what they found.

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