Maybe he dropped the “c” because it changes the “a” phoneme from æ to ɑː and gives a cleaner division in sounds: “brac-ket” pronounced together collides with “bracket” where “braa-ket” does not.
Maybe he dropped the “c” because it changes the “a” phoneme from æ to ɑː and gives a cleaner division in sounds: “brac-ket” pronounced together collides with “bracket” where “braa-ket” does not.