A fun way of keeping your students interested that will only work if you’ve put sufficient thought into the process and you’ve a personality that can pull this off.
This was an insidiously brilliant technique to focus our attention – by offering an open invitation for students to challenge his statements, he transmitted lessons that lasted far beyond the immediate subject matter and taught us to constantly checksum new statements and claims with what we already accept as fact. Early in the quarter, the Lie of the Day was usually obvious – immediately triggering a forest of raised hands to challenge the falsehood. Dr. K would smile, draw a line through that section of the board, and utter his trademark phrase “Very good! In fact, the opposite is true. Moving on … “