# Tweet by [@keefmoon](http://twitter.com/keefmoon) on 2019-11-16 10:06:37 > [!INFO] Archived from [original tweet](http://twitter.com/keefmoon/status/1195644334458191874) RT @jeffwatkins: What was an architectural mistake you made with your mobile app that had long lasting repercussions? Feel free to reply or…