WE ARE VULNERABLE TO ERRORS OF COMMON SENSE
Public opinion, or what gets called “common sense,” is sensible and reasonable in countless areas. It’s what you hear about from friends and neighbors — the stuff you take in without even thinking about it. But common sense is often also full of daftness and error. Philosophy gets us to admit all aspects of common sense to reason. It wants us to think for ourselves. Is it really true what people say about love, money, children, travel, work?
Philosophers are interested in asking whether an idea is logical, rather than assuming it must be right because it’s popular and long established.