title: Is TIME an actor in a use case?
body: <p>Alright, on a true false question:</p>
  
  <p>a)The actors of a system are only represented by humans or another software components.</p>
  
  <p>I said TRUE, and the teacher marked it as wrong, not because he considered that I missed hardware components (which I guess I would partially concede), but because, on his words:</p>
  
  <p>"TIME is also an actor." </p>
  
  <p>How would an use case diagram consider TIME as an actor??  </p>
  
  <p>Please refer to any bibliography which considers time an actor. I haven't found any, and truthfully I don't think it makes any sense. Time doesn't act by itself, it's either a system or a person that works on a schedule. </p>