I take it you've never used a Mac, for which--by Apple's infinite wisdom--scroll bars are not visible by default. It's one of the most asinine design decisions

I take it you've never used a Mac, for which--by Apple's infinite wisdom--scroll bars are not visible by default. It's one of the most asinine design decisions (of many more) of Macs, and leads to web designers adding equally asinine scroll indicators on websites.