Decartes’ method of doubt is designed to reveal what

your word would be isle.

isle is an island or peninsula especially a small one.

if you add the letter "a" you get aisle, which is a passage between 2 rows of something like chairs, shelves, or something else.

not because of any physical definition – as you can see cheerleading meets all of the athletic specifications. but, because cheerleading’s primary purpose is to support high school and college athletic teams. competition comes second! in other words, cheerleading is more than a sport.

explanation: