Mathematicians confirm the possibility of data transfer via gravitational waves (phys.org)

Such a great chapter. It amazes me how the author can take a huge step back and get into the mind of this curious character

Exactly what I was thinking, given we are beginning to go dark (in terms of radio transmission) as well, perhaps SETI are looking at the wrong type of information transmission to detect our neighbours. A hypothetical alien civilization could be using an entirely different type of technology to transmit information to what we have previously assumed, maybe gravity waves maybe something else, that we haven't even thought of yet.