Bud uses his rules for both, but it's really based on your opinion. I personally think some rules are meant for physically surviving, and some rules are meant for thriving. For example, the rule "Gone = dead!" (rules #28) really helps him for both. But the rule "Don't ever say something bad about someone you don't know - especially around a bunch of strangers." (rule #63) helps him survive. He could get physically hurt by someone, and he's more likely to if it's about someone he doesn't know and doesn't know what that person is capable of. When I did this with "Bud, not Buddy", I said it helps him thrive more, but it's really based on your opinion! Hope this helped. <3