[geon]

That's a pretty arbitrary definition.

And how long time do you give it? The human race haven't solved that problem in some 20k+ years. If we build an AI today, would you wait that long to decide if it is "true"?

[leereeves]

If humans create an AI, but that AI can't create an AI, then humans are still smarter than that AI.

But someone else being smarter doesn't mean the AI isn't intelligent.