Interesting. NPR reported the first Neutrino messages (little massless particles) sent through a rock, at nearly the speed of light. In principle, they say, one could transmit a communication right through the earth.
I’m picturing ordering Chinese food direct from China that way. Sure, we can get the message there in a nanosecond, but delivery could take a while. Unless, of course — as they speculate — you sent the transmission faster than the speed of light, in which case you can send the message yesterday and get your food today.
Hey, now that could improve service everywhere.