# Tweet by [@keefmoon](http://twitter.com/keefmoon) on 2014-03-06 15:27:50 > [!INFO] Archived from [original tweet](http://twitter.com/keefmoon/status/441596020359966721) In reply to: [@gridinoc](http://twitter.com/gridinoc/status/441594730024292352) @gridinoc @aral There is idealisation and then there is physical impossibility.