If you ever wanted to at least slightly understand string theory, Andrew Hickey has written a brilliant piece called Part 5: Zatanna over at Sci-Ence! Justice Leak! should help . . . or not. But it is a fun read:
There’s an area of physics called ‘string theory’. As a matter of fact, this – and M-theory – are misnomers. A theory, in science, has predictive power – people have been able to come up with tests of the theory, and run those tests, and the result has been consistent with the theory. String ‘theory’ should really be called the string hypothesis – as it makes no predictions which are currently testable, let alone actually tested. Unlike quantum theory, or thermodynamics, it’s not made a single prediction which can be confirmed in the observable physical world. In fact, possibly even hypothesis is too strong a word – string philosophy, or string religion, might be better.
But despite this complete lack of testable predictions, physicists have been working on string theory for over forty years. This is because we currently have two separate theories of the universe – General Relativity and Quantum Mechanics – which are both, as far as we can see, absolutely accurate, with no exceptions to either ever having been found, but which are incompatible.
I find things like this because I Google ‘Shroud of Turin.’ This paragraph did it. And if you ever read Frank Tipler’s books, you understand:
There have been several attempts at Theories Of Everything that do this over the years – Einstein spent the last forty years of his life working on various dead-end attempts, and the physicist Frank Tipler has argued in a rather wonderful paper that Richard Feynman actually *did* discover the theory of everything, back in the 1960s, but hadn’t realised it because his theory unfortunately required an infinite number of terms in the equations.{FOOTNOTE Tipler has *also* argued at times that he’s proved the existence of God, that Barack Obama is evil because he doesn’t believe in aether, and that if we clone Jesus using genetic material from the Turin Shroud we’ll be able to figure out how to get free energy from baryon annihilation. He’s one of the more…original…thinkers in physics. But in this case he makes a reasonable argument.} But none of these have had much success among what for want of a better term we can call the physics ‘community’, in part because they’re not neat. They’re not nice.
It is a two cup-of-coffee read. I recommend it: Part 5: Zatanna « Sci-Ence! Justice Leak!
Search this blog on Tipler to see more nuttiness.