Silence is consent
From Learning
Definition
Silence is consent refers to a fallacy in educational and explanatory settings where it is assumed that if the learner(s) or student(s) are not raising objections or asking questions, they are understanding everything that is being said.
It is closely related to the illusion of transparency and is cemented by perfunctory executions of the questions or comments? prompt.
Remedy
One remedy is to operate from a presumption of learning failure.