Flint's mother gives Flint encouragement when he's feeling down. She suggests he follow the example of great inventors, such as Nikola Tesla and Alexander Graham Bell, who weren't deterred by what other people thought of them. Flint then gets back to work on new inventions.
This scene simulates the moment Neil Armstrong exits the lunar lander on the Apollo 11 mission and steps foot on the moon, a first for human beings. This moment represented the culmination of centuries of mankind's ambitions and scientific understanding.