I can probably brew beer standing on one leg, but what's the point? I'll be heating my sparge water while I mash, so the wort going into my tun is hotter, IE shorter brew day.
In the end, I'll have my feet up in the air drinking a cold beer, while you're still cleaning up.
What you seem to be missing is that's it's an experiment to gain knowledge as opposed to a technique you'd use in everyday brewing. The purpose is to find out if a mash temp increase leads to lower viscosity and better flow of wort. The indications are that it does not, but that doesn't mean I'll be sparging with cold water. Unlike someone who's never tried that experiment, I now have personal data to draw on.
I understand that it was just an experiment, but I don't don't see the merits of it in brewing. Someone could measure the effects of butterfly farts on the environment and they might even find that they're detrimental, but in the end, butterflies will continue to fart.
And for what it's worth, long before I ever read this thread, I sparged my mash with additional warm (approx. 110F) water to extract a little more wort for a starter. It got me what I wanted, but as to the level of efficiency, I couldn't say nor did I really care at the time. So, based on what is described here, if I ever do it again, I can rest assured that I'm actually getting good extraction after all. Thanks.