why are oil and stocks moving together

For a long time there wasn't much of a connection between oil and stocks, and there was even an inverse relationship between them.

But since the turn of the century, and especially over the past two years, they've begun to move in lockstep, diving and rising together.

Naturally, everyone wants to explain why oil and stocks are moving together, but they're wrong. The truth is, they're missing the sinister reason for the tight connection...