Hi everyone, I just bought a new bike computer and something that has really been bothering me is that I can't understand how it can be accurate when it doesn't really tell you where to place the magnet on the spokes.

Tell me if I'm wrong here but if the magnet is closer to the hub the magnet will make more RPM's vs if it's closer to the outer edge so how is it possible for the computer to accurately track distance and speed? Or is the inaccuracy negligible?