Muddiest Point, Unit 11

I'm very familiar with Boolean searching, and I thought it was very interesting to learn more about the details of how exact match works.  The only part of the lecture that was a little confusing is the Vector Space Model Illustration.  I understand the basic concept and its purpose, it just isn't entirely clear. I think it's probably something I'll just have to look back over a couple more times to make it more concrete. :)  I also really appreciated the information on the concept of a web crawler...I've heard of this term before, but the visuals provided in the lecture on the whiteboard made it very easy to understand.