The MythBusters test the myth that talking to plants makes them grow better. They set up several test groups of bush peas, and all are under the same conditions except the type of sound to which they are exposed.
Charlie takes an "intelligence pill" and claims it has helped him invent a way for spiders to speak to cats. The researchers quickly diffuse this claim and credit the placebo effect for increasing Charlie's self-confidence, arrogance, and perceived intelligence with no actual effects on his intelligence.
Chief Hopper teaches his kind not to underestimate small ants for they can unite into a mass group and defeat the grasshoppers. To Hopper, the core to control smaller species is to manipulate their mentality: continually frightening them, imprinting in their minds that they are powerless, keeping them away from the thought of uniting.
The Earthlings and Digit have been separated into two different rooms, and they need to set the elevator shaft to the correct height in each room in order to move through Hacker's statue. Both groups decide on a standard unit of measurement, a quarter, and use their length measurement skills to set each elevator shaft to the correct height.