Last year, Tippie introduced a mandatory image essay, where students submitted a picture or collage and explained in 350 words why it was meaningful.

蒂皮管理学院去年引入了一篇强制性的图像短文，要求学生必须提交一张图片或拼贴图，同时使用350个字来阐释它的意义。

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"It's probably the only chance I'll have to spend that much time in the same room with such a brilliant man, " said James Albert, another Tippie MBA student.

CNN: Hearing from the experts

It was "a once in a lifetime opportunity to meet with one of the world's most successful and knowledgeable businessmen, " according to Anne Thimsen, a second-year student who organized the trip for 27 MBA classmates at the University of Iowa's Tippie School of Management.

CNN: Hearing from the experts