Without open mindedness about the type of success you may encounter, your startup is doomed. And without humility about the limits of your knowledge, your start

Without open mindedness about the type of success you may encounter, your startup is doomed. And without humility about the limits of your knowledge, your startup is doomed. I agree with most of the article, but gosh, why do people always have to make these kinds of absolutist negative statements? Frankly I find such a tone quite condescending.