Delightful to see Diana Muldaur in this early role. She was about 28 yo then and very convincing! Easy to see that her coming tv roles would be filled by the superconfident actress who would continue to please us for decades as a lawyer and space traveler. The writing of this episode was exceptionally future minded and discussions of risk and benefit in the philosophical meetings that Kirk held are a tribute to the venturous explorers of the universe that were put on the five-year mission in order to improve humanity and boldly go where others would not.