No it wouldn't, because -30 is supposed to work the same as 30, so you want to convert the sign to positive first. Personally, I'd use something like:

    if (!N || Math.abs(N) > 50 ) {
        N = 50
    };

It would be a simpler and shorter piece of code. Not sure why it would be faster though. Anyways, the point was in the behavior of `limit` which is easy to miss.

I think they may be trying something clever with the truthiness of N there...