Riht: There's something deep in our souls that was once upon a time very useful. We don't need this cruelty, or this desire to see cruelty any more. So what's it still doing there? Do we need to get rid of it? The uncomfortable question though is to wonder if that's not the case. And even if you decide how much cruelty you need, what if times change? This, of course, all implies that you can control cruelty like a temperature Gauge.