The phrase on screen was "Experimental or Observational Science."

Ham's argument in a nutshell is that everything we know about the past is really just a guess ("We weren't there").

So "Evolutionism" is just a guess based on Darwin and dating techniques that Ham rejects as wholly unreliable.

And Creationism is a better guess based on Genesis (the Word of God) and on other dating techniques that Ham is willing to accept because he thinks they confirm his point of view.

Thus we have two guesses about the past. Isn't it only fair then that we teach both versions to students and allow them to decide which version is true? Isn't it? Isn't it? Doesn't that make Creationism "viable"?