I hope Daniel J. Simons, author of the original that this copies, was compensated. He does own copyright, after all:

From that page: "This version of the video may not be used downloaded, saved, copied, reproduced, or used for any other purpose."

He owns the video thats shown on that site not the concept of throwing a ball. This is a widely used method for demonstrating perception awareness, displacement ect.

What your're saying is like saying if I video myself throwing an egg in the air and copyright that video then no one else can make a video of someone throwing an egg.

He hasn't copyrighted the content and idea's in the video rather the video itself.

The Reproduce you've made bold refers to reproducing the video itself and so does the "Not to be used for any other purpose". It doesn't refer to the content of the video.

I don't really blame Frog for the dupe. Have you seen the tags on the other one? Not very easy to search for.

edit: It does say awareness and test though.

My guess is 7 times this week and 126 in the lifetime of plime.

Gah. You're right, of course. Forgive a momentary... uh... moment of overzealousness.

Lmfao