I think any game as complex as D&D, no one can hold all the rules in their head at once. Maybe if you're @JeremyECrawford and it's your job you can do it. I had a moment like that working on the Dune CCG. But otherwise, you will forget stuff, misremember things. FURTHERMORE…! https://t.co/uwNtNDMp7n

— Matthew Colville (@mattcolville) June 8, 2018

I put rules in books so that we all can look them up—and only when doing so is fascinating or adds to the fun.I’ve played at Jeremy’s table at a convention and he looked up rules. There’s no shame in not having every detail memorized.

— Jeremy Crawford (@JeremyECrawford) June 9, 2018