Descending in an elevator after a Mother’s Day rooftop brunch, I had a thought I couldn’t shake: “How is this thing getting past the gigantic column of air below?” I stood there, completely still in one reference frame and plummeting in another, my eyes open wide staring fiercely, wondering how I had never thought of … Continue reading An Elevator Acts Just Like A Piston In A Car Engine. Here’s Why That’s A Problem