Andy complains that his private thoughts to Ray are not allowed to be divulged to anyone. Therapists are bound by a code of ethics to not share details learned in sessions, but Ray is not a therapist nor a human, so would not be bound by such a rule.
Andy says he's patented a system that allows sunlight to reach a room far below the earth, using mirrors and tunnels. Such a system could not be patented, as this technology has already been available for hundreds of years.
Lee, an experienced hacker, explains server farms to Darby, who is also an experienced hacker. Darby would certainly know already.