I'm honestly quite skeptical that Captain D's first demonstration of laminar flow was real because it's the sort of thing that would be perfectly easy to 3D model and render...
On a different note, I rebutted one of those kinds of naysayers on Imgur some time ago who was saying that one of those videos didn't depict laminar flow. My argument was simple: flow is either laminar or turbulent; this isn't turbulent, so it must be laminar.
I feel like the "fluid moving in parallel planes" definition is not intuitive.
I was thinking more that when a stream of water is bending and twisting, that doesn't jive with "planes". Of course, it's really that when you zoom in far enough at any one section, the water is moving in parallel streams.
I really like those "selfish reasons" at the end. I had heard the economic one, but I had never associated humanitarian work with "reducing terrorism" and "reducing disease spread". I mean, it's obvious that that happens, but not really something I had considered.