In this clip, Charlie uses fractal dimension to detect forged comics. He argues that forgeries take longer to draw, causing ink to seep out in a way that increases "wrinkliness", which can be measured by fractal dimension.

Toni the Baker makes cupcakes for Bill's niece and nephew, and she runs out of boxes for all of the cupcakes. Bill walks through how to determine the number of cupcakes in each box, without Toni giving him the answer.

The teacher poses to his students the Monty Hall problem, which investigates the probability of choosing a correct answer given three options and the subsequent probability of changing the original choice. The teacher explains why his students' instincts are not correct.

The Brain tells a "horror story" about exponential increase error, making references to trigonometric concepts such as the cosine function and sine curves.

Charlie and Marshall explain the logic of a truel (a duel among three people).