That might not have been parent's point. I see it more as "this is such a natural thing to want" that mathematicians had been thinking about it, even before we

That might not have been parent's point. I see it more as "this is such a natural thing to want" that mathematicians had been thinking about it, even before we could come up with a coherent definition for the concept. In some ways, this is a good example to avoid making the "fallacy fallacy" - just because someone's argument/reasoning is wrong or incoherent, it doesn't mean the point itself is wrong. https://en.wikipedia.org/wiki/Fallacy_fallacy https://en.wikipedia.org/wiki/Fallacy_fallacy The solution of other similar things like the halting problem, is also a testament to the power of mathematics and formal language, and gives us some hope that this problem (and similar things like consciousness) will be solved in the future.