1 is a real number. So is 1/2. Are these not useful in the real world?

What a great idea! I've done a bit of this and it's a great translation. Jordan's wide range of vocabulary is thankfully preserved intact.

What publisher makes the editions with the page edge illustrations?

This is obviously wrong and the author knows this. That's why they add so many qualifiers that the original statement becomes meaningless. They're just being edgy.

Welcome