CSC151 2009F, Class 07: Drawings as Values

Admin:
* EC/Academic: 
  This week is the kickoff of the Department's Thursday Extras series.  
  Jerod Weinman will be discussing Efficient machine learning for 
    computer vision-based depth perception.
  4:30 p.m. Thursday
* EC/Support: Women's Soccer, Wednesday at 5:30.
* Don't forget to vote today!
  * But make sure you know the issues first.
* CS Table this Friday (noon, JRC224A): Technology and Disability.  
  We will be reading "A blind person's interactions with technology".  
  No EC for attending, but you might find the discussion interesting.
  I'll have copies of the paper available
* Are there questions on Assignment 2?
* Two readings for tomorrow: 
  + Writing Your Own Procedures 
  + How Scheme Evaluates Expressions (version 2).
* Reminder: Drop me a note when you're not going to make it to class
* WARNING!  Word will give you smart quotes, which our Scheme interpreter
  does not enjoy.

Overview:
* Representing images.
* Thinking about drawings through composition/decomposition.
* Pure approaches vs impure approaches.

Reflection:
* Something I love about Grinnell: I don't need to tell you how to work
  together!
* I can't believe folks in your generation have not yet learned
  "Save early and often!"
* Order of scaling and shifting matters, a lot!
* Computers are sentient and malicious.