Start with a staircase
Imagine a staircase. On the bottom step sits an ant. Ants are clever in small ways: they follow smells, carry crumbs and work in teams. But an ant can’t learn a new game.
On the next step is a mouse. A mouse can learn a maze and remember where the cheese is. Above it is a dog, which can learn tricks and understand dozens of words. Above the dog is a chimp, which can use tools and solve puzzles.
Then comes a human. People write stories, build rockets and invent things nobody has seen before. As far as we know, humans are the smartest thing on the staircase.
Now here is the big question. Is the human step the top? Or does the staircase keep going up into the clouds?
Superintelligence is the idea that the staircase keeps going. It is a mind that would be far above the human step. Not just a bit smarter than a clever person. Smarter than the smartest person, at almost everything.
Smarter at almost everything
Some computers are already very good at one thing. A chess computer can beat every human at chess. But ask it to tie a shoelace or tell a joke and it is stuck. That is called narrow AI: brilliant at one job, hopeless at the rest.
Superintelligence would be different. Think of the best doctor, the best scientist, the best artist and the best teacher you can imagine. Now imagine one mind that is better than all of them, in all of their jobs, at the same time.
And there is more. Computers think fast. A superintelligence might think thousands of times faster than we do. It could also be copied, so millions of copies could work on different problems at once. That is what the top glowing steps on the staircase mean.
Not a robot, not a superhero
In films, super-smart AI is usually a shiny robot with red eyes. Real researchers don’t picture it that way. A superintelligence would most likely be software: a program running on lots of computers. It might have no body at all.
It also wouldn’t be magic. It would still need electricity, information and time. It couldn’t know things that nobody can find out. Being very smart is powerful, but it has limits, just like being very strong does.
Why are people talking about it now?
For a long time, superintelligence was an idea for science fiction books. Then, in the last few years, AI got much better very quickly. Today’s AI tools can write, draw, code and answer questions on almost any topic. They still make silly mistakes, and they are not superintelligent. But they are a lot closer to the human step than anyone expected.
That made scientists, companies and governments start asking serious questions. Could the staircase really go higher? How soon? And how do we make sure a mind that smart is safe and helpful?
The exciting part, and the careful part
The exciting part is easy to see. A superintelligence might help cure diseases that have puzzled doctors for centuries. It might design cleaner energy, help every child have a patient tutor, or work out how to clean up the oceans. You can explore these ideas in What could superintelligence do?
The careful part is just as important. A machine that is much smarter than us needs to understand what we really want, not just the words we say. If you asked a very literal machine to “make everyone smile”, it might do something silly instead of something kind. Researchers call this the alignment problem, and lots of clever people are working on it.
Being careful doesn’t mean being scared. It means the same thing it means when you learn to ride a bike: you wear a helmet, you practise somewhere safe, and you learn the rules before you go fast.
Nobody knows exactly when
Some experts think superintelligence could arrive within ten or twenty years. Others think it will take much longer, or that it may never happen at all. They are all thoughtful people looking at the same facts and reaching different answers. That’s normal when something has never happened before. You can compare their views on Is superintelligence here yet?
So the honest answer is: nobody knows for sure. What we can do is understand the idea, ask good questions and pay attention. That is exactly what this site is for.