But what about fast, reasoned, logical thinking that places a high emphasis on internal consistency? There is no need for slow there.

Think eventual consistency rather than strict consistency in the world view and the thinking can be blazing fast and keep the other properties. The only advantage to slow is that it avoids the short periods of inconsistency, but that also hurts it since it is harder to make big changes in the world model.

IMO if you're thinking in terms of eventual consistency then that's a very different outlook to the one described above. There is also:

- Extraverted Thinking which is also relatively careful, reasoned and logical but puts more emphasis on external validity than internal consistency.

- Introverted intuition which is faster, more intuitive mode of thinking which some people might see as logical but isn't really. It's logical in the way ChatGPT is logical: it works until it doesn't.

Note also that nobody is using just one of these functions. So it's normal to lead with an intuitive thought and then back that up with logic or vice versa.

But I stand by the idea that you either be fast XOR fully reasoned. You can still be "kinda fast" and reasoned (but you'll never be as fast as intuitive judgements that are close to instant), and you can be pretty accurate with fast intuitive thought (but you'll never be as assured as a more thoroughly reasoned position - sometimes your intuition will lead you astray).