Challenge the mutability of the antecedent. Since AS-01's counterfactual is of the form ”if A, then B”, Dr. Zany could question the plausibility of A.

brain balks at "mutability", stumbles over "antecedent", sprains ankle on "counterfactual"

”Baloney!” exclaims Dr. Zany. ”No TV reporter could ever have wandered past, let alone seen the robbery!”

Oh, I get it! Brain jumps up and down with glee.

I found it helpful and entertaining.