There is a theory which states that if ever anyone discovers exactly what the Universe is for and why it is here, it will instantly disappear and be replaced by something even more bizarre and inexplicable.
There is another theory which states that this has already happened.
There is a third theory that both the first two theories were concocted by a wily editor of the Hitch-Hikers Guide to the Galaxy in order to increase the level of universal uncertainty and paranoia and so boost sales of the guide.
This last theory is, of course, the most convincing, because the Hitch-Hikers Guide to the Galaxy is the only book in the whole of the known universe to have the words “Don’t Panic” inscribed in large, friendly letters on the cover.
There is, however, another theory that says that if ever the answer is found the Universe will suddenly become a good and happy place and all the psychiatrists will be suddenly out of a job. This theory, too, has a great deal to commend it.