Gilfoyle explains to Jared that if he checks up on the Eagle eggs at the museum he might kill them because they are in a state of being alive and not alive as long as he doesn't know the outcome.

Sheldon is in the car on a road trip with his dad and brother. They are talking about roadkill, and his dad asks if it's alive or dead if it's still twitching. Sheldon mentions that it sounds like Schrodinger's Cat and explains the theory.

In this clip, Leonard explains on the radio how the Large Hadron Collider is being used to find subatomic particles like neutrinos.

After drawing out the plans, an architect seems to misunderstand the proportions of the building he must build. He mistakenly presents the customer with a scale model, instead of the actual building.

This song discusses Tarzan's fascination with the wider human world he has yet to see. During the song, he looks through a telescope and sees the Great Comet of 1882.