michael from the round-and-round-she-goes dept.
the hollow room writes: "How about skiing on a never ending slope? A story at New Scientist suggests that some fool is going to try to build one of these. Built like a huge tilted record player, it can spin at up to 30 km/h.
If I have seen farther than others, it is because I was standing on the
shoulders of giants.
-- Isaac Newton