However, despite being so smart, Marvin is typically made to perform menial tasks and labour such as escorting people, opening doors, picking up pieces of paper, and other tasks well beneath his skills. Even extremely hard tasks, such as computing for the vast Krikkit robot army, are trivial for Marvin. All this leaves him extremely bored, frustrated, and overwhelmingly depressed. Because of this, all modern GPP-capable machines, such as Eddie the computer and the Heart of Gold's automatic doors, are programmed to be extremely cheerful and happy, much to Marvin's disgust.
