Critical thinking includes understanding science Nancy Thayer, Bremerton View Comments Critical thinkers know science is imperfect. Last year, scientists changed their recommendations. Scientific studies were retracted or debated. Many believe this proves that science doesn’t work and that scientists don’t know what they’re doing. In reality, this is precisely how science works. It is a method, not a body of facts. The fact that assumptions and theories get retracted is evidence of science correcting itself. The fact that scientists change recommendations as new evidence comes to light ...