Ok. Let’s take those quotes in context. First Rams - my hero at design school. Any kind of balustrading in the space would be obtrusive. It literally gets in the way of the space the designer is trying to create. The space performs the function of an entrance to a hidden theatre. It’s primary goal is to evoke feelings of excitement and awe. To paraphrase Jobs, it’s supposed to be magical.

Next the Jobs quote. It’s also not just how it works! In fact, I disagree with that quote. Design isn't about any of the those in reality, it’s about solving problems. This is a quote that gets banded about a lot and one that fundamentally misunderstands the nature of the design process. The end goal may be how it works, looks and feels. Good design is an elegant solution. Balustrading in the space is inelegant.

The Principle from Rams 10 principals that I’d apply is the one about honesty as hiding the stairs and balustrading could be considered dishonest - however that’s tenuous.