Is there still any chance for a human to come up with something new an AI can't? Haven't all the possible ideas ans/or "sub-ideas" already been implemented and

Is there still any chance for a human to come up with something new an AI can't? Haven't all the possible ideas ans/or "sub-ideas" already been implemented and fed into "AIs"? I suspect the humanity is omniscient and it's only problem is lack of possibility to keep everything it knows in a mind simultaneously and connect the dots. An "AI" seems to be a solution to this problem. Even an individual human could be almost omniscient if he could simultaneously put everything he has ever knew/thought/seen into his working memory.