In an ideal world wireless connection would work just like the
communicators in Star Trek. You’d simply say the name of the person you
wanted to talk to and their receiver would spring into action without
annoying everyone else on the same network. Naturally no-one would ever get
a crossed line or a ‘busy’ signal and they would never ever be in the
toilet. Also, there would be no concept of time zones and if you woke
someone up they would be cheery and alert.