Time for one of my favourite Youtube videos, by Posy (Michiel de Boer.) 'Mouse cursor history (and why I made my own).'

https://www.youtube.com/watch?v=YThelfB2fvg

It runs through the history of mouse cursors, as well as problems with some of the standard ones, and shows, among other things, historical cursors which were straight and not tilted.

It is one of those amazing videos that make the internet worthwhile, is short, and is by the author of Posy's Cursor Pack, http://www.michieldb.nl/other/cursors/