The current moment is a master class in the practical limitations of RCTs. We’re seeing that:

1. RCTs are slow, expensive and don’t scale well to large numbers of questions.

2. Extending RCTs to real world questions they weren’t intended to answer is extremely hard.

https://twitter.com/kareem_carr/status/1246832471142027269?s=21 https://twitter.com/kareem_carr/status/1246832471142027269

https://twitter.com/kareem_carr/status/1246833460850950144?s=21 https://twitter.com/kareem_carr/status/1246833460850950144