Since this hasn't been addressed in a long time I thought a new thread would be appropriate

How do these things work? Have there been any tests?

Maybe we could get Ted D to do a group tour.
I would love to give these a try.
These group tours happen a lot at AC.
The bowls could go state to state and safely return to Ted and we could all post impressions.

I am actually serious about this, I think it would be interesting.
Imagine if some of the most skeptical heard a large diff. and some of the non skeptics didn't.

Stranger things have happened.