Maslow has been criticized for lacking rigor, since there is no way to measure whether a child's needs have been met. Maslow claimed that the lives of people he admired proved his theories to be valid, leading critics to question his objectivity. Some also say Maslow fails to account for the people who had tough childhoods, but still shone in later life. But Maslow's big idea continues to guide parents: a child who is cherished will always stand the best chance in life.