Homework #11: Variables With Dynamic Scope

Read this article at Microsoft Research about "Dynamic Variables." Do not read the Appendix to the article just yet, only the main body of the article.

Answer the following questions:
1) List two purposes for which they envision using these dynamically scoped variables?
2) Choose one of those two, and motivate it. That is, show what the code would look like when not using dynamic variables, and then what it would look like with dynamic variables.
3) Briefly describe the "simple" and the "novel" implementations.