# Tweet by [@keefmoon](http://twitter.com/keefmoon) on 2012-10-29 19:40:03 > [!INFO] Archived from [original tweet](http://twitter.com/keefmoon/status/263002274354319360) Great example of scientific understanding changing in light of new evidence. http://t.co/P4Rj3L4D H/T @olivia_solon