Chapter 4, Metalinguistic Abstraction

Exercise 4.70

Since cons-stream second argument is delayed, and within the statement, THE-ASSERTIONS is mutated to a new value. Thus it will make an infinite stream of assertions where each assertion essentially points to the same assertion just like ones.

Thus, it will cause the loss of all the previous assertions(except the last one added) as well as unecessary create an infinite stream of assertions even when actual number of assertions is finite.