1. Yes it would be somewhat predictable to find these lenses for a civilization more advanced than ours. 2. Unless we find faster than light communication (whi

1. Yes it would be somewhat predictable to find these lenses for a civilization more advanced than ours. 2. Unless we find faster than light communication (which, with our current understanding of physics is about as likely as humans jumping to the moon) there is nothing we could use it for other than definite proof that other life has evolved in the universe. Interesting data, but they're most likely extinct for billions of years already and even if they're not, the compound gravity lens will have moved out of alignment by then so we have no means to send a message back.