Many of these kinds of smarts are not tested in school, yet you would consider some gifted in one or more of these areas as intelligent for that thing. An example would be Stephen King. The author of The Seven Kinds of Smart states that Gardner has come up with four pieces of evidence for his theory. First, each intelligence can be symbolized. Each intelligence uses a different set of symbols to communicate thoughts, ideas, or expressions.
Liguistic intelligence uses the English language or Spanish for that matter.
Logical-Mathematical intelligence uses numbers, operators, and Greek letters. Second, each intelligence has its own developmental history. Each intelligence develops separately through ones life. Third, each intelligence is vulnerable to impairment through insult or injury to specific parts of the brain. Thus, each intelligence has its own area in the brain.