Even if they only move at the speed of light, they can travel in a straight line directly through the earth instead of along the curved surface, saving time. The problem is that if neutrinos can pass through the entire earth unimpeded, most of them will pass through your detector on the other side too.
Comments
The neutrino thing was a failed experience (false data), so no HFT here.
Not this one. The idea of using neutrinos to beam through the Earth directly, from London to NYC.
https://en.wikipedia.org/wiki/Faster-than-light_neutrino_ano...
Even if they only move at the speed of light, they can travel in a straight line directly through the earth instead of along the curved surface, saving time. The problem is that if neutrinos can pass through the entire earth unimpeded, most of them will pass through your detector on the other side too.