Say one's glove falls from the chairlift onto a closed trail, could one ski down to get it?
Could one? Sure, one could. Of course, one could get arrested for trespassing on private property. And then one's coulda-shoulda-woulda life could spiral so far into lawlessness that he'd soon be living on the street, distinguishable from the other homeless only by his magenta Degre 7 anorak. That could happen. One could also assume patrol is serious about Responsibility Code Rule #6: "Observe all posted signs and warnings. Keep off closed trails and out of closed areas." But then again, maybe on a powder day, one might-oops-assume otherwise. One can't say.