 And I realized fairly early, the instructor coming in and saying, okay, well, here's what I remember, is vulnerable on cross-examination to questions like, well, really, Mr. Instructor, that was two years ago, right? Do you have total recall? Do you have a photographic memory? Is it not true that you're embellishing on this for the benefit of your friend, the student? And I figured if what we teach in the key elements is on video, that is discoverable.