alt Hacker NewsIntelligence is spiky. In some things humans may play near the limit (Go possibly), but if you look at parts of mathematics like addition, humans can add in their head just fine but its a few trillion times faster to use a computer on addition problems of any size.
And that's not even really touching societal/network intelligence. A single human isn't that smart and can't accomplish that much. Hence we form families, and companies, and societies, and governments. What does a society of AIs look like?
Note that addition that's "trillion times faster" is purely an optimization, not greater intelligence.
And a society of humans does not increase our overall intelligence. It allows all of humanity to access the accomplishments of our most intelligent members throughout history (which is huge, don't get me wrong!) but it seems almost self-evident that our civilization as a whole is not smarter than Newton/Einstein/von Neumann/etc.