There are too many things that are too crazy about this experiment to even mention them all.
For starters he's hitting a wet sponge from the beginning, so that assumes the head is already bleeding profusely before he's struck the first blow.
Then there are no realistic dynamics, the sponge stays where it is, on top of the wood block, after the first blow. This person is not only already bleeding profusely before he's been hit, but his head doesn't move after the first hit, he doesn't fall down.
Then he's raising his arm way up behind him and over his own head after the first hit, obviously trying to create a spatter pattern on the white sheet behind him, but with a 3lb sledgehammer, for what efficient purpose if he's intending to keep hitting this person with the sponge head who hasn't fallen down?
He shoulda put a wig on the sponge I say.
And has Merritt told them he was on his knees?
And that bin behind him should have been a couple of inches more over to the left. Or should that be right? Oh yeah, we don't know because we don't know where he was kneeling in relation to the bin that's been positioned to catch the drips, or where his victims were when he struck them.
And why is he only doing this experiment last Sunday? Prep for a different trial perhaps?
Bring it on.
JMO