And in several cases in TOS and early TNG, shields do pop up automatically and red alert is sounded by the computer, not by the commanding officer.
However, it would be easy to see how the computer, out of desire to protect the crew, instead caused its demise by raising the shields when combat was imminent but not inevitable. Probably Starfleet, too, believes that its personnel should protect their employer by their lives if necessary, and not indulge in self-defense when that goes against the employer's interests.
Timo Saloniemi
However, it would be easy to see how the computer, out of desire to protect the crew, instead caused its demise by raising the shields when combat was imminent but not inevitable. Probably Starfleet, too, believes that its personnel should protect their employer by their lives if necessary, and not indulge in self-defense when that goes against the employer's interests.
Timo Saloniemi