Readings: 
Ch. 16 and Pet Rocks 
(http://www.cs.brown.edu/~tld/talk/home-Z-H-18.html#node_sec_16.1.1)


1. What are robopets? What types of behaviors to people exhibit towards their
   robopets?

2. Consider the following six systems:
   1. an ant
   2. an elm tree
   3. a two-month old infant
   4. a robopet rabbit
   5. a whale
   6. you

   Define two different "scales of complexity" so that for each one, a 
   different system would be obviously the "most complex". If a society gives 
   out rights, privileges and responsibilities according to your scales, would
   it change your answer? Why/why not?

3. Tom talked about self-programmability. How does that ability differ us from
   machines for now?