[Retric]

There are probably people 1/2 way around the world you could hand deliver a letter within 24 hours, but I suspect there are more people you can't hand a message to within 24 hours now than there where alive in the 12th century. At the extreme, a random Peasant in North Korea and someone staying at mcmurdo station in Antarctica are both fairly inaccessible in those time scales, but so is most of China, and India.

PS: Granted, extend it to a week and the numbers shift, but at the edges the world is really not all that connected. Getting within 1000 miles of someone may be easy, but that's not contact.

[chipsy]

Yes and no. The world is a lot more populated, but also increasingly urban, which by its nature(more communication and transportation services in town) means a larger proportion of people are easy to access.

As well, the proliferation of cell phones into rural areas is a inestimable breakthrough in communication. We've only started to see the impact of this.