The list starts with: 0.5 ??? Diagonal Proof or Cantor's it's Diagonal Proof. Think about: What if m=0.5??? Could this M be on the list? *Provide a scenario where using 2 and 9 for the question marks "?" would not work. The list starts with: 0.5 ??? Diagonal Proof or Cantor's it's Diagonal Proof. Think about: What if m=0.5??? Could this M be on the list? *Provide a scenario where using 2 and 9 for the question marks "?" would not work