common knowledge

Common knowledge refers to information that most people know and accept as true without needing specific evidence or proof. It includes facts like "the sky is blue" or "water boils at 100°C at sea level." This knowledge is so widely recognized and shared that it doesn’t require citation or explanation in most contexts. Common knowledge helps facilitate communication efficiently, as everyone understands these basic facts without confusion. It differs from specialized or uncommon information, which may require sources or evidence for explanation.