It's very easy to have closed discussions which don't really engage with the other side. And in refusing to acknowledge what the other side is about, you limit your own knowledge. Sure, the other side may be trying to persuade you for their own vested interests rather than the pure search for knowledge and understanding, but that only means you should harness their own selfish interests towards your own pursuit of greater knowledge and understanding.
Certainly, you can be sure of what you're about, and want to pursue that. Listening to the other side only dilutes your vigour, your ability to change the world in a way which you know to be better. Well, not a problem. The Shove is not for you. But, if you can go beyond that certainty, then the Shove may be for you.
I've seen some quite articulate lefties. The problem is, you start to realise after a while that they're very good at stringing sentences together which push all the left emotional buttons, but you wonder about the depth of their position beyond that. I've also seen some very incoherent right wing views expressed - but (partly through historical accident) I'm more familiar with the excesses of the left.
But, fundamentally, I believe that if we all tried to understand each other better, and tried to better grasp the other side's position, we'd be going one step closer to the ideal of a democracy populated by the informed and aware, rather than democracy being a battleground for ideas.
And so, this is what I hope the shove will do - a little bit, just a little ...