Cinema film classifications are essential. We need them. But 12A doesn't work. It encourages studios to dumb-down adult action movies to fit the rating; allows incorrectly classified older films to scare the pants off 10 year olds, and makes 13-year-olds believe that when you shoot someone they don't bleed, scream or writhe in agony, but just fall athletically to the floor and lie still.
San Andreas might be the stupidest film I've ever seen.... a new breed of stupid. It's not low-budget slapdash stupid. It's not aimed-at-children stupid. It's not silly knockabout action-star totally-fun stupid. It's stupid-stupid. The things that happen in it, the things people say, everything is done without a shred of intelligence, sophistication or even care.