One of the ‘golden rules’ of chess openings is not to bring the queen out too early. This is because opposing pieces of lesser value can develop whilst gaining time by attacking her.
Yet needless to say this rule is widely ignored, especially by young players trying to pull off scholar’s mate (1.e4 followed by 2.Bc4, 3.Qf3 or 3.Qh5 and 4.Qxf7 mate). And there are also many exceptions, for example the Sicilian Najdorf Poisoned Pawn (1.e4 c5 2.Nf3 d6 3.d4 cxd4 4.Nxd4 Nf6 5.Nc3 a6 6.Bg5 e6 7.f4 Qb6) is known to be an excellent line of play (at least at GM level) but features the early development of Black’s queen and the snatching of White’s b2 pawn.
So what’s the golden rule? That there is no golden rule! And that trying to impose one can land you in a lot of trouble!