The difference between typing an email and writing a letter or memo out by hand is akin to walking on concrete versus stroll­ing on grass.

A butcher can tell you which cuts of meat are the freshest; an online grocer may not. That same butcher, if he is good, might not just remember your preferences—which an online retailer can do frighteningly well—but ask you how your mother has been doing, whether you caught the latest football game. These interactions remind us that we are more than con­sumers; they remind us that we are part of the world in a way no amount of online shopping ever will.

If we spend our eve­ning online trading short messages over Facebook with friends thousands of miles away rather than going to our local pub or park with a friend, we are effectively withdrawing from the peo­ple we could turn to for solace, humor and friendship, not to mention the places we could go to do this. We trade the com­plicated reality of friendship for its vacuum-packed idea.