I will probably need to buy a new laptop within the next 6 months. My current laptop has a removable wireless card, which I leave at home when I need to get work done. I know that most new laptops have a built-in wireless card, but I would prefer to be able to remove and leave it at home. I like having access to wireless internet, but it can also be very distracting. I wish I had the self-discipline not to check my email or surf the internet, but I do not. I need external constraints. Is all hope for productivity lost?