Look at this video of former San Francisco Supervisor Ed Jew counting tens of thousands of dollars in front of an FBI-provided video camera.
See? He’s doing it wrong. The correct way is shown at the end of the short video here - the Canada, U.S. and England method. The primary reason for counting dough properly is counterfeit detection. You gots to look at the faces of the dead white males in order to do it right. That’s the system, baby. Maybe in other countries the bills are different enough so that this doesn’t matter, but we’re talking U.S. folding money here.
What’s that? You can’t see the faces ’cause the money’s all upside-down and backwards? You’ll need to bankface the notes before you start, of course.
Here’s the thing – if you just look at the corners, then you will get taken in by a raised note sooner or later.
This is called an eleven dollar bill cause it’s a one with corners from tens attached.
Count American money the right way and then you’ll get good at it and go superfast.