Is There a Galactic Internet?

"When you have no idea how hard a problem is, you start with the easiest things," he says. "So it makes sense to first do the easy thing and see if alien messages are feeling space." He adds that until we develop warp drives or practical wormholes, it's not realistic to think that we could explore a significant fraction of the galaxy. 'If the secret is what their stomachs look like, well, you can't share it, but at least we would know'