What is the stupidest statement you have heard in the past week?

I work as a Vet. Had a client in who as he was about to leave my room turned round and said: "Science doesn't know everything does it? though.... I've always wondered, like....how do they know what the dinosaurs were called? There was no one there to write it down when they were around was there!? Amazing stuff that they some how worked it out... mind blowing really. Really smart, those bone scientists!"

...my poker face was twitching with this one!