A group of participants attempts to understand the purpose of the machine and the magnets given to them. After they put the magnets in the machine and turn it on, they notice that the magnets start to form complex structures on their own. The magnets symbolize atoms, and the experience suggests that compounds can form on their own over time, given a constant input of energy.
Venus gives Arnold a 2-minute lesson on the atom. He makes allusions to inner city life (gangs, the neighborhood, etc.) to explain the different parts of the atom in a highly relatable manner.
Neil deGrasse Tyson explains radioactive decay. He explains how we can determine the age of a rock using meteorites and illustrates that atoms undergo nuclear transmutations over time until they become stable elements.