That's what mouse acceleration is for (in comparison with mouse speed) - acceleration deals with when you move the mouse slowly it moves slowly for precision use, but when you move it quickly it moves faster than a linear proportional speedup of the slow movement.<p>When it's not right, the end result is moving the mouse quickly to get near a button, then slowing down and the cursor slows down more and you both miss the button and get annoyed that it's only creeping ever more slowly towards it like a digital Zeno's arrow.