Whatever you read that suggests this is grossly incorrect. As another poster pointed out our gut feelings are actually likely to be incorrect.

Believing in gut instincts is part of the faulty thinking referred to as Emotional Reasoning (This is part of the 10 Negative Thinking styles promulgated by and dealt with in Cognative behaviour therapies). The behavioural results are that we will look for facts that will encourage us rather than discourage is from thinking of and searching for the truth of a matter.