The four pronoun-related errors "their ingenuity," " his commute," "when she does," and "closer than they think" can be corrected with its, our, it and we.
We have a pronoun-related error when we use the wrong pronoun to refer to a word in the text. For example, in "My dreams are too big. It cannot come true," the error is in the use of "it", a singular pronoun, to refer to "dreams", a plural pronoun. The correct pronoun would be "they".
With that in mind, we can identify and correct the four pronoun-related errors in the paragraph:
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