I think it's rather natural to think that something called "open" can be used, not merely looked at. I think it's also natural to emulate what is observed. If I can't use what I learn by observing something, what's the point?

I understand the opposing view, which claims it's natural to mean "look but don't touch" by "open". I'll grant that it can be a plain english interpretation. But it's an interpretation that violates the instinct of the observer.