Provides real life examples of how biased algorithms in big data can have serious effects; for example, how the "Compas" algorithm is used by courts to determine recidivism rates despite the possibility that the algorithm is racially discriminatory.

The Mess Hall of the camp burns down, and a few campers confess their contributions to the fire in their letters to their parents.

Explains experimental biases that should be avoided.

Sandy and Danny sing to their friends about their summer rommance. Sandy's version is sweet and romantic, while Danny's is cooler.

DW keeps a snowball in the freezer from the "best day of her life," but it goes missing. Arthur and his friends and family each recall what happened the day of the snowball's disappearance for each of their own point of view.