Even novel thoughts are rarely original.
Every time I come up with an algorithm idea, or a system idea, I'm always checking who has done it before, and I always find significant prior art.
Even for really niche things.
I think my name Aeonik Chaos might be one of the only original, never before done things. And even that was just an extension of established linguistic rules.
My great-great grandfather was named Aeonik Chaos!
I knew it! My google searches failed me.