There are different kinds of intelligence. Humans have excelled probably farther than any other animal in the history of hte earth s far as an ability to learn and use reason. However, the repetitive history of our repeating mistakes over and over again shows that we have a pretty slow learnign curve as a species.

As a species, we DO have a great deal of intellectual capacity. However, we also let that intelligence be dominated by greed, ideology. ethnocentrism, and other forms of irrationality.

There's "intelligence," or IQ, and then there's emotional intelligence.
[amazon.com]

Although I think it's a safe assumption to say that "intelligence" isn't universal. As one of the smartest men who ever lived once observed, "Only two things are infinite, the universe and human stupidity, and I'm not sure about the former." Albert Einstein

Intelligence is one thing, enlightenment and wisdom are quite another.

existential narcissism

We are the only species we know of that builds intelligent robots, then builds a transportation system to get them safely to other planets to explore and send back information of what they have discovered on other planets. I'd say that's enough to call ourselves "intelligent".

Is my intelligence negated by another’s ignorance?