Alex,you must move in different circles than me, as the only people that have
ever asked me about "Gravity Waves" are people who are interested in astronomy,and then that was within just a couple of week after the announcement on TV and the internet an news media by the LIGO team about a year or so ago.
I don't think it is something that can stimulate a conversation in a pub unless it is between astronomers..
Cheers
