# Tweet by [@keefmoon](http://twitter.com/keefmoon) on 2018-05-04 20:04:27 > [!INFO] Archived from [original tweet](http://twitter.com/keefmoon/status/992495190857404417) In reply to: [@None](http://twitter.com/None/status/992435784077672448) @MilquetoastHost I am also a lay person, but I think the answer is that they have a pretty good idea of the speed of the expansion of the early universe, and there was a period of hyperinflation, but it wasn’t immediate and wouldn’t explain the matter bias.