I noticed another thing with the rings today. I think that the tighter your knots are the tighter the rings are together, of course. The effect of tighter knots seemed to be little or no slippage of the webbing. I noticed slipping from the loose knots but not the tight ones.
This might explain why some people swear they always need a slip knot, and others don't use why it's needed.
Is that too much to ask? Girls with frikkin' lasers on their heads?
The hanger formly known as "hammock engineer".