There’s no shame whatsoever in knowing what you’re good at and sticking to it. We can’t all be Heston Blumenthal, so more often than not, we’ll just make beans on toast with an egg on top for tea, and that’s fine. Megan Fox knows what she does well, and her target audience, so she makes a very good living providing TV and movies for them. And she’s done that for two decades, since her breakthrough role in the first live-action Transformers movi…