But the wayward children of the centrist dads will deny such logic. Corbynism was always going to persevere, they claim, whoever is leading the Conservatives. For it is written in the stars…

“No one cares about the IRA any more, daddio,” as I’m sure da kidz say these days. And if Jezza says he was only calling some Islamist terrorists his friends because they are definitely not his friends, then it’s our aged cynicism that prevents us from going with it. Nevertheless, it is galling to be told that we’re out of date and out of step just because we happen to remember stuff, because we’ve experienced it, rather than because we’ve read a bit about it on The Canary.

Those who believed Corbyn would triumph at the general election believed it as an act of faith, despite all the available evidence, not because of it. And because they turned out to be not quite as wrong as we predicted – Labour did actually lose, remember – then we centrist dads are told to shut it and let the children get on with it.

And if centrist dads’ worst quality is that we “refuse to engage in any meaningful debate”, where does that leave your average Corbynista 20-something who dismisses any and all criticism of the Great Leader as “MSM lies” and “fake news” without addressing the substance of any of it?

But enough of the logic. As Mark Twain said: “When I was a boy of 14, my father was so ignorant I could hardly stand to have the old man around. But when I got to be 21, I was astonished at how much the old man had learned in seven years.” Or as another great American writer, Brad Paisley, put it in his song, “Letter To Me”: “Each and every time you have a fight, just assume you’re wrong and dad is right.”