Spin buttons have annoyed me for many years, and I wonder why it was chosen that they should work the way they do. I can only assume that someone decided that UP means increasing, and so pressing UP takes you from '1' to '2', etc. The problem is that this flies in the face of other UI controls. If I'm in a word processor, or spreadsheet and I want to get from page 1 to page 2 (or line 10 to 20), I press DOWN. So why do spin buttons work the opposite way?
I have a TV remote with an up and down button; if I'm in a menu (listing channels, for example), to get from 10 to 20 I have to press DOWN. If I'm watching channel 10, however, and I want to get to channel 20 I now have to press UP (similar to how a spin button would work).
Why does this inconsistency occur?