However, it's not sufficient. The actual tasks have to be written down, tests constructed, and the specialists tested.
A subset of this has been done with some rigor and AI/computers have surpassed this threshold for some tests. Some have then responded by saying that it isn't AGI, and that the tasks aren't sufficiently measuring of "intelligence" or some other word, and that more tests are warranted.
If an AI is better at some tasks (that happen to be written down), it doesn't mean it is better at all tasks.
Actually, I'd lower my threshold even further--I originally said 50%, then 20%, then 5%--but now I'll say if an AI is better than 0.1% of people at all intellectual tasks, then it is AGI, because it is "general" (being able to do all intellectual tasks), and it is "intelligent" (a label we ascribe to all humans).
But the AGI has to be better at all (not just some) intellectual tasks.
Let's say you have a candidate AI and assert that it indeed has passed the above benchmark. How do you prove that? Don't you have to say which tasks?
Take the Artificial out of AGI. What is GI, and do the majority of humans have it? If so, then why is your definition of AGI far stricter than the definition of Human GI?
But, when it comes to the lower-bars, we can spend a lot of time arguing over the definition of a single term, which isn't especially helpful.
What is the most non-task-like thing that highly intelligent people do as a sign of their intelligence?
Einstein in the early 1900s was employed to evaluate patents, a job which undoubtedly came with a list of tasks for him to accomplish. He was good at it. But he also gave himself the work which resulted in his famous papers.
Or consider an intern and Elon Musk, given the task of multiplying a series of 6-digit numbers by 11-digit numbers. The intern will grab a calculator or spreadsheet and finish quickly and accurately. Elon Musk will say “this is a fucking waste of my time” and go do something way more valuable. Which is smarter?
Yes, I can see that there is a "spark-of-intention" that might be part of intelligence--or it might be separate depending on how we define these things.
Whatever the case, whether or not AIs can have coherent "sparks-of-intention" is something to watch for, but might be even more elusive and controversial than whether or not AIs are "intelligent".
An AI (a computer program) that is better at [almost] any task than 5% of the human specialists in that field has achieved AGI.
Or, stated another way, if 5% of humans are incapable of performing any intellectual job better than an AI can, then that AI has achieved AGI.
Note, I am not saying that an AI that is better than humans at one particular thing has achieved AGI, because it is not "general". I'm saying that if a single AI is better at all intellectual tasks than some humans, the AI has achieved AGI.
The 5th percentile of humans deserves the label of "intelligent", even if they are not the most intelligent, (I'd say all humans deserve the label "intelligent") and if an AI is able to perform all intellectual tasks better than such a person, the AI has achieved AGI.