Breaking Bad extremely playful on set, with Aaron Paul describing him as "a kid trapped in a man's body". Gilligan originally intended for Aaron Paul's character, Jesse Pinkman, to be killed at the end of "Breaking Bad"s first season in a botched drug deal as a plot device to plague Walter White with guilt. However, Gilligan said by the second episode of the season, he was so impressed with Paul's performance that "it became pretty clear early on that would be a huge, colossal mistake, to kill off Jesse". Donna Nelson, a professor of organic chemistry at the University of Oklahoma, checked
Breaking Bad season received overwhelming critical acclaim. Following the end of the series, critic Nick Harley summarized his commendation of the show: "Expertly written, virtuosic with its direction, and flawlessly performed, "Breaking Bad" is everything you could want in a drama. Critics will spend the next decade dissecting and arguing about what made it great, but the reasons are endless and already well documented." During the final season, the show also received praise from George R. R. Martin, author of the "A Song of Ice and Fire" novels, particularly the episode "Ozymandias"; Martin commented that "Walter White is a bigger monster than