Sheldon seemed not to believe someone who is younger and smarter appearing so soon, because he assumed that it would have happened after hundreds of years.

He lost all his confidence that he even wanted to give up his whole research because he couldn't take that his entire life's work was invalidated by a 15-year-old Asian.

cyborg: a being part is human, part machine

excel: good at doing something

shoot: injure or hurt someone or something by gun

donate: give charity to someone or an organization.

fruitless: achieve nothing

cease: stop doing something or prevent it from happening.