You need to think of the context of that logo, which was, what, 30 years ago? The arrow meant speed in a time when post (hell, pretty much everything) was slow.

You need to think of the context of that logo, which was, what, 30 years ago? The arrow meant speed in a time when post (hell, pretty much everything) was slow. And visual jokes such as this were still pretty new. It's like saying The Beatles' 'She Loves You' is simple and obvious, yeah, it might seem like that now, but it sure as hell wasn't the case back then!