I must not engage. Engagement is the time-killer. Engagement is the little trap that brings total exasperation. I will face this obvious attempt to start a pointless and frustrating argument. I will permit the temptation to engage to pass over me and through me. And when I have scrolled down I will look at the screen where it was. Where the troll has gone, there will be nothing. Only pictures of cats and other people’s children and food will remain.