I want to know the answer to the following question:
When did Prince and Smolensky develop their theory?
All the background I'm provided with is that "In a course at the LSA summer institute in 1991, Alan Prince and Paul Smolensky developed optimality theory—an overall architecture for phonology according to which languages choose a pronunciation of a word that best satisfies a list of constraints ordered by importance; a lower-ranked constraint can be violated when the violation is necessary in order to obey a higher-ranked constraint.". Is that enough to answer the question?
Answer: yes