> ... when exactly it's not considered "married"? Easy to test on a case-by-case basis -- either a person can or can't drop one language and become productive

> ... when exactly it's not considered "married"? Easy to test on a case-by-case basis -- either a person can or can't drop one language and become productive in another in a short time. If they can, then they're not married to a single language, unlike cybernetic swans who mate for life.