Astronomers, among others, like to talk about parity in discussing physical systems; mirror images of stuff or even their properties. It looks as though the Hubble Telescope is a clear confirmation that the much sought after serendipity in scientific investigations obeys parity. I doubt that there has been a more clear example of not "finding valuable or agreeable things not sought for"; negative serendipity, that is. Or is it anti-serendipity? I forget.
ELMER H. RICE