9.11 Exercises

1:	What does reify mean?
2:	What is the scope of design decisions made in mechanistic design?
3:	What are the three fundamental elements of a design pattern?
4:	What aspect of a collaboration does the observer pattern attempt to optimize?
5:	What pattern does the proxy pattern specialize?
6:	When should a proxy pattern be employed?
7:	What three kinds of reliability does the reliable transaction pattern optimize? How do they differ?
8:	Why would someone use the smart pointer pattern?
9:	How does the use of dynamic memory deallocation cause memory fragmentation?
10:	What are some of the cons of the smart pointer pattern?
11:	Why would someone use the guarded call pattern rather than queue messages for a target task?
12:	What is the purpose of an iterator in the container pattern?
13:	What is the primary strategy of the rendezvous pattern?
14:	How does the thread barrier pattern work?