> <i>I truly understand why HFts have expressed interest in neutrinos: the fastest technology available to link different exchanges is microwave, but microwave need towers/dishes above the ground, and the world is a sphere, so you have to deal with the curve of the Earth, and because of the curve HFTs are losing time. Too bad. Mother Nature is not helping.</i><p>Well, then they should go and build themselves a vacuum tube; their microwaves will fly faster :).