[Frank_Discussion]

"Since there are only four fundamental forces in the universe and EM appears to be the most practical for long distance communication, why would they not use EM?"

Four fundamental forces in the universe governed by classical physics. Quantum Physics predicts additional forces and additional properties of the classical ones, which makes more exotic communication possible.

The EM search is an important one, and I expect it will bear fruit some day. Just don't subscribe to the notion that EM is all that's available for communication. We are actively tinkering with alternatives now.

[Physicist]

Quantum Physics predicts additional forces and additional properties of the classical ones, which makes more exotic communication possible.

Quantum mechanics does not permit FTL communication.