Mr. DANIEL: Once the movement started and the water pressures developed, there was enough force then just to cause an entire block to slide tens of feet and to breach the levee.

NPR: Panel's Report Assigns No Blame in Levee Failures

Task World Chess Champion Viswanathan Anand with explaining every slide of a pawn or block of a bishop and he might lose sight of the board.

FORBES: Mediocrity versus Mastery: The Case for Game-Based Learning