Definition Critical in Latin means to separate, to choose to judy 33 Critical thinking is a very complex mental process undertaken to deal with complex social, cultural historical and academic issues. It is essential to good writing because muddy thinking can only result in poor writingDefinition ◼ “Critical” in Latin means “to separate, to choose, to judge” ◼ Critical thinking is a very complex mental process undertaken to deal with complex social, cultural, historical and academic issues. It is essential to good writing because ,muddy thinking can only result in poor writing