Facebook inadvertantly casues the fabric of reality to shread itself and make an ungodly mess over several nearby galaxies

You may have noticed that for a while, Facebook has had a 'Like' option you can click if you, well, like something. The little thumbs-up thing.

Now, however, there has appeared another button next to it: 'Dislike'. (Actually, it's called 'I dislike this' but the sentiment is the same).

The thing is, in providing this seemingly innocuous option, the software developers may actually be endangering the very fabric of the universe. Let me elucidate.

Firstly, you used to be able to just like something. This was fine. But now you can both like and dislike something, and that's a massive paradox.  Because actually, you can't both like and dislike something, and now thanks to you the universe is going to implode and Lembit Opik will become Prime Minister, or something like that.

Having realised this, you might think that the best course of action would be to quickly return the like/dislike balance to a neutral state. So you quickly click (and thus split the infinitive for the second time in a paragraph) on 'Actually I like this' and 'Unlike'. All better, hmm?

Well no, it isn't. Because in order to get back to the starting position, you have to click both 'actually I like' and 'unlike' the thing in question, and that's the same as liking and disliking something simultaneously, and that's another paradox.  Now that you've done this, currently the only thing stopping Stow-on-the-Wold flying into the upper troposphere is the fact that up there the TARDIS is reversing the polarity of the neutron flow whilst Amy Pond is wearing something particularly flattering. This can happen. The neutron flow thing, I mean.

There are other possibilities. Supposing two different people posted the same thing, or somebody posted the same thing twice by mistake, and you liked one and disliked the other. That may be more than Superman and Doctor Who together could handle.  New York could be splurged all over distant galaxies by now.  Perhaps Amy Pond could get another gratuitous mention in this paragraph too. Who knows? Don't be the one who has to make everybody find out. Choose life. Choose only either clicking the Like button or the I dislike this button.

Facebook, you may just have caused the greatest danger to humankind since some scientists on the Franco-Swiss border started messing about with subatomic particles. At the very least, I wouldn't be surprised if, in the coming weeks, a small black hole develops in your offices and several unwitting employees mysteriously find themselves transported to the Norse Dark Ages.