Here's the falsifiable bit: expect Trumps poll numbers among evangelicals to improve in the next few weeks, and up to the election assuming he doesn't say anything stupid about Jesus. Specifically, look for the number of evangelicals who strongly disapprove of Trump to start dropping.
My anecdotal evidence and gut feeling will be incorrect if the number of evangelicals who strongly disapprove of Trump to remain the same or increase (again, assuming that Trump doesn't say his daughter is the second coming of Christ or something equally offensive).
You can also call me an idiot if Trump says his daughter is the second coming of Christ and still improves his favorability among evangelicals.- Killing Donald Trump Part Four: Really, Guys? Really? (March 14, 2016)
Now obviously, I was correct about Trump improving his numbers with Evangelicals. He beat out Bush II's percentage for his first term among all Protestants (58% to 56%) and took fully 80% of the White Evangelical vote (couldn't find numbers for various non-white evangelical voters). The number of Evangelicals who supported Trump also went up significantly from April to November (only 15% of regular evangelical churchgoers supported Trump in April to 46% Strongly Support in November).
So the result was correct. What was wrong? The model, the "why this result will happen" was ambiguous. I expected Trump to gain evangelical support because of the riots. There was no accounting for other issues that might shore up his support.
Trump would likely have gained an Evangelical boost towards the end regardless since Hilary Clinton took the Dem nomination, Voting for Hilary Clinton would be even more of a betrayal to Evangelicals' self-image than voting for Trump. My model didn't account for that.
Even when you're right, the goal isn't to be right. The goal is to make your model of reality closer to reality. Scott Adams is right about Predicting rather than Rationalizing. If your model predicted incorrectly, or you were right for reasons outside of your model, you're wrong.
I'm going to try to include the why more into my predictions in the future. This time, I went off a gut feeling,
That said, I have one more gut feeling I need to pass from my stomach before moving onwards and upwards. It's about White Evangelicals, and we'll look at it after the break.