That's not all he said. The other thing he said was that no museum guide would recite creationist cant. If they did, they should be (and almost certainly would be) fired from their job immediately. Is this clear to you now?
Do you know the guide I am referring to?
Where you there?
Do you know every guide in ever museum in the world?
Do you know any of the kids or parents that were there?
If not, I do think you are making a lot of assumptions, but them again, assuming that all started with nothing and that nothing became a frog and over millions and millions of years that frog became your great, great, granddaddy 2 zillions times removed (a monkey), makes me think that you can assume just about anything and given enough time you can convince yourself that it is true, that it is a fact, even science.