Every time I read @JeremyECrawford's tweets on @SageAdviceDnD:
Person: What is the rule on [insert subject]? The [insert book] doesn't have a section on it.
J: On page X, the section called [subject].@Wizards_DnD @DnDBeyond #DnD #dnd5e #SageAdvice— Mister J (@JustinTotino) March 15, 2018
— Jeremy Crawford (@JeremyECrawford) March 15, 2018