Why is it only possible to pop one item at a time from a stack? Forklifts,
for example, can add, or remove multiple items from a stack. How do the
rearrangements of data possible in this model compare to those possible
using only an ordinary stack? How should data be sorted using a single data
structure of this type? We will discuss the answers to all these questions.
If you still think you might be bored, then be sure to bring along coins of
five different denominations.