Travel reminds us of our God-ordained dependence on others. There’s a call button above every seat on commercial airplanes. In all my travels, I don’t think I’ve ever used it. I’m not sure if that is due to shyness or to pride, as there have certainly been times when I acutely needed help while seated. While traveling recently, for example, I endured some delays and was thirsty. Yet I waited to ask for anything until the plane reached 10,000 feet, when the flight attendants came row by row to grant our drink requests. I didn’t press the call button. It…