At the two-year anniversary of my November 2022 craniotomy (my two-year cranioversary), I’m thrilled to say I can now – with moderate confidence – explain how my brain cancer appeared.  I’m fascinated also that the answer starts with a story of biochemistry and quantum physics, nicely aligned with my undergraduate B. Sc. in Biochemistry with a Physics minor.  My answer may come with bias, but the science checks out.  In today’s post, I include references to appropriate sources but will refer to generally agreed-upon knowledge without reference.  The fast version is that while one of my brain cells was dividing quite normally, a small quantum fluctuation in one proton (hydrogen atom) in one DNA nucleotide caused one copy of the cell to include a single point mutation that changed everything .  This might leave one asking: “what are the chances of that???”, to which I’ll say the chance is non-zero, it’s calculable, but it’s vanishingly small.  If this ...