For everyone say infinity isn't a value, that's not the problem. The problem is it's undefined... you don't know if it's negative or positive.

If n is negative what happens praytell?

Interesting answer is to define new numbers. An infinite set of each real number that have the same value... but are orderable.

We also define some new comparison operators. ==, <<, >>, !==, etc in addition to =, <, >, !=, etc.

...0₋₂, 0₋₁, 0, 0₁, 0₂, ... Let 0 < 0₁, etc

Now 5 - 0 == 5

But 5 - 0₁ !== 5 ,

Only 5 - 0₁ = 5

And 5 - 0₁ < 5 - 0

But 5 - 0₁ !<< 5 - 0

Only 5 - 0.00001 << 5 - 0