When someone conducts an experiment, and not just scientists but any logical curious human who wants to test a new thoery, product or innovation, they will in most cases test their ideas on a small amount of people to make sure things are okay. Doing preliminary tests allow the experimenter and the people he introduces his ideas to feel more comfortable and safe with what they are about to be involved with. Scientists practice this …showed first 75 words of 332 total…

…showed last 75 words of 332 total…