[Simon IA Cash]

Any slowness and lack of motivation can be overcome by training and will. If you smoke and don't be content to lie on the couch and just eat, and you get off your ass and be productive, you will benefit from the altered thinking with creative and different ideas (and some seemingly-brilliant but actuallly-stupid ones). It can mess with your memory a little bit, but I really think it comes down to a willingness to maintain effort and drive.