And indeed, the continued existence and use of both the telephone and the postal service demonstrate in an unarguable way that email is not "more efficient" - it's just different. Email, telephone and the postal service are three different modes of communication, each of which is useful for a specific category of communication. To that list, I'd add Twitter, IM, IRC, online forums/BBs/newsgroups, social news sites, t…
Which makes me think of a debate that was going on around 1994. It was Gopher versus the World Wide Web. The two are complementary it was said. I think email and traditional letters are not complementary. The overlap is almost 100%. The only thing that keeps the paper letter alive is the lack of ubiquitous and legally binding electronic identity and signature. It's not alive because it is more convenient or a differe…
I'll grant you that there is some overlap between email and written letters, though. However, the postal service carries all sorts of things, not just letters.