We live in a world of amazing technology that we often take for granted. Cell phones are a good example. It was only a couple of lifetimes ago that the Pony Express was state of the art in communications. Now we routinely talk to friends and family anywhere in the world without giving it a second thought. This weekend I called Michele while she was in Cheyenne, Wyoming. I didn't know she was in Wyoming. The last time I talked to her, she was in Denver. It wasn't that long ago that if a loved one was traveling, either they called you, or you had to know their itinerary to be able to reach them.
There was a time when traveling was a dangerous thing to do, and travelers were often out of communication with friends and family for months or years at a time. That is unimaginable to us now. We take it for granted that friends and family are usually just a phone call away. For most of history that would be seen as a miracle. In many ways it is.