A valid and useful theory of gold prices:
A) helps to explain and predict the movements of gold prices over time.
B) very likely relies on complex assumptions.
C) very likely includes as many details as possible about gold prices.
D) all of the above

Question

Quizplus · Accepted Answer

A valid and useful theory of gold prices should be able to explain and predict the movements of gold prices over time. While complex assumptions may be necessary in some cases, including as many details as possible about gold prices is not necessarily a requirement for a theory to be valid and useful.

A Valid and Useful Theory of Gold Prices