Dolphins appeared on Earth about 25 million years ago. Their brains are larger and have more gyrations, but in spite of a huge evolutionary head start (humans appeared ~7 million years ago), they did not form a civilization and did not even start using tools.
The same question can be applied to other animals, such as octopuses, whose evolutionary head start is even more than ~100 million years old. At the same time, they have tentacles that are very functional and suitable for working with tools.
Why no other species on Earth has formed even the most primitive civilization in such a long time remains a mystery.
There are many explanations for this paradox, but it is still unclear what made humans so unique. What is the reason for our evolutionary success?

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