Geoff,
All my friends are saying that I have a wide open mind. All are saying too that I'm stubborn but logical and my arguments are scientifically based.

But logically, if I have a chance to mobilize a Wikipedia reference-linkfacet joint located 8 cm deep with my thumb without mobilizing skin and muscles... BTW, facet joints are twins and applied on another vertebrae...

Some papers show that trying to realize a such job is not really possible?