"T. Martin" <[log in to unmask]> asked:
>Don Wiss wrote:
>> The only time sunglasses make sense is when one is in an unnatural
>> situation. To me these are: on the water, on the beach, and driving into
>> the sun. The first two are not natural places for humans to be
>
>Could you explain this last sentence?

Beaches and especially on the water are very reflective. We did not evolve
living on either. Actually sunglasses may not be so necessary at the beach.
And I agree with Hans's comment about snowy mountains or glaciers in the
summer. (It would be someone living up North to think of these.)

Don.