During Angela’s stay in the Labor and Delivery ward at St. Mary’s, we were required to turn off our cell phones at the doors to that particular area of the third floor. Based on my previous education in that cell phones really can interrupt airplane navigation equipment, I did so without complaint. Well, it appears that that was a good idea, as evidenced by a report released today in the online journal Critical Care (reported on here at Ars Technica). It sure was a pain to be in a communications brown-out, but sometimes it really is for our own good.