Don- I'm not litigious, and I know that Lucky Jim would never consider any action legal, or otherwise. However, I do see the big difference between these self-inflicted incidents you site, versus this act of god experienced at Black Rock.
I think it funny that someone suggests this is an example for the case for tort reform. Hell, a schister would likely try to attach the architect, in this case, for placing the cart path where they did, that caused Jim's ball to go to the spot it could never have reached otherwise.
I'm with you Don, If people need lawyers to force the right thing, we're all MOSTLY in trouble. (For the benefit of the lawyers who do not fit that profile)