causal claim
Mathematicians have resisted formal proof formalization because they have not seen sufficient value in the time investment; Thomas Hales spent 20 person-years formalizing his Kepler conjecture result.
Unresolved speaker · Mathematics Just Changed Forever — Kevin Hartnett · 26 Oct 2026
In their words
The transcript segments this claim was taken from
“There is resistance because mathematicians don't see by and large or didn't see the value in that type of time investment. So Hales invests 20 person years in formalizing his Kepler conjecture result.”11:15Report a misattribution
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