Eddy commits an unselfish deed by replacing a dead bulb on a Christmas tree, prompting Santa to deliver presents to all of the kids in the cul-de-sac. It is clear that one selfless act isn't enough to change his character, however, as he takes everyone's presents for himself.

Examines the controversial use of expected frequencies in the Dreyfus Affair.

Sophie answers the question, "what is a computer?" She uses an analogy involving a person at a desk to illustrate how computers process information and discusses the different components in a computer, such as a hard drive, memory, and a processor. She then talks about binary, the language of computers

Chidi is goes insane while teaching his class and explains a few philisophical theories.

How Institutional Review Boards ensure that science is ethically bound.