New york times reporter david carr couldn't trust his own memory of things he did when he was a cocaine user, so for his memoir he wrote about what he imagined might have happened.

According to the National Institute of drug abuse, Cocaine can cause several damages not only to the body but to the brain as well. They have found that Cocaine affects the brain only in just a few seconds after the consumption. This drug immediately blocks special receptors that we have in our brain causing some damage like losing memory.