Last week, as part of new versions of iOS and OS X, Apple consolidated every iPhone user’s Apple ID and phone number, merging them into one ubiquitous profile. These profiles can chat over iMessage, which is Apple’s take on BlackBerry Messenger, except it works on both computers and on mobile devices. This means that you can text a friend’s iPhone from your Mac. On the whole, sending messages works great (aside from some goofy visual bugs in the Mac app itself), and requires very little set up. So at last, the average human being can “text” from a computer.