Does anyone have a clue what physicists are on about these days ? Just when I get a little comfortable with particles and quarks I see that some of them are now on about strings and parallel universes and M-Theory . All this seems to be so that they can explain everything in the universe with a set of equations, right back to the singularity (or not as the case may be!). Every time their theories break down a little they introduce some kind of X-factor to explain why their equations don't work. Why should everything in the universe be explainable by a neat little formula ? What about chaos etc ? It must be great to get loads of money to come out with theories like this that can't really be proved right or wrong, I think I'm in the wrong job here P.S please excuse my ramblings, I'm got my theory head on today !