Professor Langdon gives a presentation on the meaning of symbols and how their meaning has changed over time. He displays several symbols, such as the trident and the swastika, and asks the audience what they mean. He illustrates that symbols have had different historical meaning.
Baines teaches Detroit Red the symbolism of language through the contrast of the two words, "black" and "white." He suggests that society views the white man as the definition of "white" and the black man as the definition of "black."
On Christmas Eve, Ms. O is surprised to learn from Santa that she is on his naughty list. Santa shows her that she has performed more naughty actions than nice actions and explains his use of the "greater than" symbol. Unless she performs more nice actions than naughty actions before Christmas, Ms. O will not receive any presents.
The tribe of hominids wakes up to find a strange black monolith in front of them. At first, they are extremely anxious and cautious about it. They calm down once they touch it, and as a tribe, they gather around it.