 If there's a conscious awareness that that buzz has come through, your sleep's already been interrupted. Who then is in control? Is the tech in control or is the human? It can be turned off or it can be silenced or it can be put into airplane mode and that's okay. Bottom line, having your phone right next to you can hurt your sleep, even if the buzzing and dinging don't wake you up. I'm moving my charger across the room, thanks to Dowdell.