I would disagree with the article. I think the 'laziness' comes from a more well tuned intuition for value. Smart people don't make money because they're smart. Sometimes all smart people want to do is indulge in things that don't necessarily bring value to anyone. However, if you have a knack for seeing the value in something (or a lack of value) I think you'll be more likely to succeed. If you think about it, since grades don't come from a linear expulsion of effort, aiming to get high grades when you don't know what you're ROI is going to be does sound dumb.