I like games and puzzles so I started a YouTube channel last year, then I thought of shooting this, which I think will please most of you.

I know what’s going on, I’ve looked into it (though it messed me up at first), but I presented it here as some bizarre phenomenon that I have no clue about.

Grab your own 10 Red cards and 10 Black cards, shuffle them up and try it yourself.

There are different ways to present this, so have fun ...

https://youtu.be/h5K5qPz1alk

It’s wild!

Interesting!

Hi Alexandre,
this is a very fascinating fact indeed! You can find a performance here: https://www.youtube.com/watch?v=aNpGxZ_1KXU too (and then the explanation in the following video.)

I don't know how mathematically are connected, but this effect reminds me Walter B. Gibson's "Pay Off".

I love games and puzzles, so I will enjoy watching your videos.