I follow this maxim: Small actions should have small consequences. The best UI should allow for arbitrarily small actions that result in arbitrarily small conse

I follow this maxim: Small actions should have small consequences. The best UI should allow for arbitrarily small actions that result in arbitrarily small consequences (e.g. the scroll bar, multitouch, drag/drop). We live in a continuous universe† and this makes for the most natural and easily discoverable interface (i.e. the user can tentatively test things). †At least it appears that way on the macro level.