All ideas from students are treated as improvable .
学生的概念和想法皆被视为可改进的。
Human beings are not perfectible . They are improvable .
人不可能十全十美，但可日求进步。
And that 's a slightly different sort of situation , where the kind of intellectual who draws big pictures of idealized , improvable situations may not be the person who is most worth listening to .
