https://en.wikipedia.org/wiki/List_of_cognitive_biases
And thinking your gut knows something is part of those biases, namely, confirmation and selection bias.
Or, it's System 1, the fast system. While your System 1 might make bias mistakes, I believe it can be trained not to make them.
https://en.wikipedia.org/wiki/List_of_cognitive_biases
And thinking your gut knows something is part of those biases, namely, confirmation and selection bias.