Reasoning improves the output of the model. Originally it was a prompting method called chain of thought but later models were trained to do the reasoning steps

Reasoning improves the output of the model. Originally it was a prompting method called chain of thought but later models were trained to do the reasoning steps without the human prompting for it. Being able to see the reasoning steps is just an accidental benefit. https://arxiv.org/abs/2201.11903 https://arxiv.org/abs/2201.11903