Scott Wolter

But here's where it gets interesting.

If you zoom in close on those two symbols at the bottom, you see what looks like a ladder.

and that ladder is actually a different form of pentatic numbers.

So you have a line like this, and a line on both sides is 10, and one on the opposite side is one, and one going this way is five.

Well, here we have four lines that go across, so that's 40, and then four at the bottom, so the number's 44, right?

The symbol on the left is an X like this, but it's got an arc that goes across like this.

Never seen that symbol before.

Nobody knew what it was.

I found it.

I found it on a medieval astrolabe.

You know what an astrolabe is?

It's a navigation device.

And

I looked at over 600 that were in Oxford Museum in London, and only one has that symbol on it.

And it's being used for the number 40.

And what it is is a combination of the Roman 10 and the Hindu Arabic 4.

If you combine them together, it looks like an arced X. That's what I coined it.

What's four times 10?

40.

44 degrees.