http://calnewport.com/blog/2011/05/10/lab-notes-i-spent-42-hours-last-month-on-the-activity-most-critical-to-my-success/?utm_source=feedburner&utm_medium=feed&utm_campaign=Feed%3A+StudyHacks+%28Study+Hacks%29&utm_content=Google+Feedfetcher
15 years ago