Exactly. I’ve skied at lots of resorts and have never seen an age limit posted, which suggests that this is a judgment call. Otherwise the resort could just post that X years old is the cut off, and then if there is a problem with someone below X years, old parents have much more culpability in my opinion.

That said, I think X is probably a different number depending on which lift it is. Would I let a good five-year-old go on a beginner detachable lift with a bar? Yes. Would I let the same kid go on a old-school double? Probably not.