That man, while given the ABILITY to learn, nevertheless needed to be taught the basics beyond instinct. In other words, instead of migrating like a herd, you learn to adapt your surrounding to you, not the other way around.
Job spanned many generations. Job is a metaphor for humanity. It is a history of man’s rise from the primitive state to the reasoning state. Job plainly states that in order to pass judgement, man MUST LEARN and know the Laws of the UNIVERSE. There is a reason for that.