"Could someone please explain to me the meaning behind his comment regarding the super intelligent alien around <a href=""https://www.youtube.com/watch?v=ymcOLL2qEg8&amp;t=16m50s"">16:50</a>? Is it that even within Tesla they are not necessarily doing things in the perfect way because there's always a better way to do it? Because that seems like the wrong attitude", why wouldn't they have used the "much better" engine?