Prelude to Space

You're certain to be included in a survey at one time or another. However, there's one you may not recognize as such. Chances are it will be more important than you imagine. It could be man's—
I was climbing the steep side of a central Wisconsin hill, holding my bow away from my body for balance, when I first saw the stranger. He sat on a stump at the crest and watched me struggle up. As I drew nearer I panted out a greeting and received his cheerful Hi in return. When I finally reached the top, I threw myself on the ground and began catching my breath.
He didn't say anything at first, just looked at the bow and the quiver of arrows on my back. Finally he said, May I look at it? and reached for the bow. I handed it to him. He examined it carefully and returned it.
Beautiful workmanship. Is that all you use? he asked.
I never cared much for guns, I answered. I've always thought a bow gave the animal more of an even chance for his life.
We talked then on the various aspects of hunting and how the crisp fall air seemed to make the deer seem closer than during the heat of summer. While we talked I tried to place the reason he disturbed me, but I couldn't seem to do it. He was dressed in an old plaid shirt and dungarees and his blond hair wasn't many shades removed from my own straw thatch. But there was something odd about him that I couldn't quite find.
Perhaps it's the cloth. His words surprised me. You see, it hasn't been discovered on this planet as yet. My face must have shown astonishment because he went on in the same vein. I admit it's confusing, but it's also true. My clothes weren't made on Earth. He chuckled then, deep in his throat. I don't blame you for being confused. I know how I would feel if I met an extraterrestrial being before space travel was a reality.
I kept staring at him. Finally I blurted out, What in Sam Hill are you talking about?
He leaned forward on the stump and his face grew earnest. You might say I'm a poll taker. I have to decide certain things from various interviews with individuals I meet.