Emotionalism is just as much a danger as thinking without being in touch with one's feelings. That too can go very much astray. In school we were taught to debate. We were given a subject to debate with another child. When we finished, we changed sides and were asked to hold the opposite view and debate, giving all factors of the other side.
Any child can do it, any grown-up can do it.
It is just straight-forward thinking. One can have the opposite opinion by the flip of a coin. There is no inherent truth in any opinion, because it's simply linear thinking. However, if these thoughts are connected to our feelings we can no longer debate the opposite side. This is the old story of having to bite into a mango to know its taste.