public int oldCompareTo(Person that) {
        if(this.age > that.age || (this.age == that.age && this.isTall && !that.isTall)) {
            return 1;
        } else if( this.age < that.age || (this.age == that.age && !this.isTall && that.isTall)) {
            return -1;
        }
        return 0;

    }