If you don't wear 'em, you won't get it.

Have you ever walked into a meeting and noticed that all the participants were wearing glasses? Is there any difference between these meetings and others? With the wide spread use of contact lenses and laser vision correction this is becoming an increasingly rare event, but there are still many who choose to (or must) wear the old headgear. I doubt if 10,000 years ago half of these people, perhaps especially the men, would have had a chance to survive in a hunting society. Perhaps that is why people with glasses are considered nerdier than average; they have more reason than average to respect the technology that would have allowed their ancient doppleganger ancestors to survive, and by extension technology which helps them get by today in the business world.