When scientists do an experiment, they compare a small number of a population, and look at the results from within that group. We all know smoking is meant to increase the chance of getting cancer. how? because scientists did a study of probably 100,000 people or something like that, maybe even less. When a new drug is tested for side effects and affectiveness, its done through a small test group. Most things that are tested, are tested via a small population.
Most people are right handed -- How do i know this? because a study was done of a group of people. There are no records kept of what hand people use, and it would take forever to check every individual. It is fair to say, that the majority of scientific conclusions are based on tests on a small number of random people.
The results of a poll here would be inaccurate as far as knowing what every single user thinks, but 30,000 is a large number of people to get a very realistic idea of what people think...
