"Affirmative, Captain!"

A friend at University wondered why Mr. Spock said, "Affirmative" and "Negative." Surely "Yes" and "No" are more precise? Does Poul Anderson make this same criticism of Star Trek dialogue? In his novel, Satan's World, published in 1968, David Falkayn says:

"'I distinctly remember telling Muddlehead to lay off that stupid 'affirmative, negative' business, when a plain 'yes' or 'no' was good enough for Churchill.'" (Chapter XI, p. 435) (For full reference, see here.)

Chee Lan explains the far gone computer lingo as "'...engineerese.'" (ibid.)

I have had to argue with someone who got his idea of logic from Mr. Spock, not from philosophy. Andrea (scroll down) advised me not to bother.