A question about the Frénet–Serret Apparatus

[swampwiz]

I was reading the Wikipedia article about this, and I've noticed something that doesn't seem to make sense:

https://en.wikipedia.org/wiki/Frenet–Serret_formulas

The article says that the unit vector for the tangent direction is:

T = ( dr / ds ) / | dr / ds |

OK, that's the standard way to express a unit vector, but it seems that in this case, | dr / ds | is 1, so what is the point of including this term?

 

[Haborix]

You're correct, there is no point. Wiki has it without the norm in the very next section and gets it correct in other places.