It turned out that I’d relied on implicit communication by assuming my colleague and I shared the same understanding, which wasn’t the case. And I know I’m not alone in that experience.

Detert, J. R., and Amy C. Edmondson. "Implicit Voice Theories: Taken-for-granted Rules of Self-censorship at Work." Academy of Management Journal 54, no. 3 (June 2011): 461–488.