This is the most valuable thing I've learnt during my PhD. PhD teaches you: research skills 50% ability to communicate

This is the most valuable thing I've learnt during my PhD. PhD teaches you: research skills 50% ability to communicate your research to others 50% In my experience, I've noticed a lot of very smart hackers to be woefully bad in communication, and PhDs to be much better than the median at it. On the other hand, I think there is no correlation between research skills and having a PhD.