When Michael Rother, who co-founded Nue! and Harmonia, played Intuition Festival at The Broad on Saturday night, I had a mini-revelation. This might have happened during a Harmonia song, but I can’t be sure since it was well past the point where everything Rother played on the stage outside of the museum converged into one giant piece of music in my head. I was dancing and, suddenly, something in the tone of the guitar made me think of New Order. It’s not as random a thought as you think.