3 Points and Question

1. In the Laurel reading, I found the segment on page 4 about the label "agent" was interesting. This description helped me to look at the noun in a new light (insurance agent, secret agent, etc).

2. Psychology attempts to describe what goes on, while theatre attempts to represent what might occur.

3. Tufte describes that boring data ink sometimes sets the stage for data action, but sometimes the data alone sets the stage.

Question:
I am having trouble wrapping my brain around this concept of ink. Why is that important?