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Here ya go....

http://www.altervistas.com/sites/weird/118/

Many people still alive in the US remember when horse racing, boxing, and baseball were the three major sports that "most ordinary people" cared about.

Well, that's why he's talking about loops. Motion becomes a topological property of space-time. The loop just "sits there", so that's how time travel would look like in a static space-time. He's just wondering if General Relativity allows for such a structure to exist, and examining the consequences.

I'd be wary of calling scientists cranks just taking a good critical look at questions like that. Einstein himself, who often criticized quantum theory (c.f. the EPR paradox) and often debated Bohr well into the night, was able to put his feelings about the theory aside and worry about the logical consequences that would follow should the theory be correct (looking for a contradiction, I'll admit). Hell, even his Nobel Prize was awarded for his contributions to QM, namely in explaining the photoelectric effect.

In all, he's just entertaining the notion of time travel to see if General Relativity allows it. If you're looking for a crank, you'll probably have better luck looking at this guy and his device.

You mean this?

I disagree with most of the posts here, Lego needs to become more specialized to deal with the changing tastes of it's customer base - Lego Porn is the way of the future.

Interesting.. I think maybe cats are the answer to all of lifes little mysteries. Electricity storage, Quantum Mechanics--ever heard of Shrodinger's Cat?

Maybe we should be putting a little bit more research into Cat Dynamics.

:D