That lady said skinny people tends to be thief because they know they cannot win by force. She said fat people tends to cheat because they look kind of innocent. She said masculine people tend to be violent. If she were right then there would be no good people around except a small minority of lucky naturally perfect build people who are not thin/fat/masculine. Do you think she reversed the result with the cause ? Those people had to be bad/evil first to commit a crime doesn't matter they are skinny or fat or masculine. You can say if a skinny person wanted to make quick and easy money the higher possibility they would steal but not because they are skinny they will steal.