DoD Ch3.

     Brooks starts by talking about a past life experience where he was instructed to design and refine a database. He had to refine the database several times to fulfill the clients needs, which were not clear from the beginning. He refers to it as goal iteration, and he considers it to be a key aspect of design. He then refers back to the tree diagram, saying that one can't always map out the whole tree diagram before beginning the design process. Each tree diagram node has many parallel possibilities. Brooks then talks about how estimations play a role in design. Next he discusses the "desiderata" for a while and how constraints constantly change due to discoveries and such. Brooks goes on to discuss how some designers actually don't work the ways previously stated.  On pg. 14 he talks about the waterfall model and its backward flowing arrows. Brooks finally addresses his opposers ideas on the design process.  And in conclusion, he states that designers are right-brained, spatial thinkers that use oversimplified models to help with extremely difficult designs.