# Tweet by [@keefmoon](http://twitter.com/keefmoon) on 2017-01-06 12:50:23 > [!INFO] Archived from [original tweet](http://twitter.com/keefmoon/status/817352612618129409) RT @rshotton: How adding the tiniest bit of friction can change behaviour, even suicide rates From Halpern book https://t.co/6eZEmVrDOW