Yes, but this is the core of what they're offering. As the son of a science museum director, I've seen exactly what it takes to keep hands on science exhibits going. I agree with the article here, although I think it's appropriate to have some screens if required for an exhibit (e.g. a thermal imaging system)

This, exactly.

Sure, ok, it requires whatever it requires. That's the product. Don't do it and you have essentially no product.