Can you guess this note? Perfect Pitch and Physics

Bad news about perfect pitch: Your perception sags as you age. Sure it's cute when you're young and still hear and know A=440. Ask some 50+ "perfect pitchers" about how they view their skill, as opposed to twenty-somethings. Many find it frustrating and diminishes their appreciation of music. Bet you change your perception about whether it's worthwhile to train yourself that way.