We do not know whether hackers can be born in adulthood because we all weren't. Regarding your questions there is an answer that fits hacker mentality perfectl

We do not know whether hackers can be born in adulthood because we all weren't. Regarding your questions there is an answer that fits hacker mentality perfectly: "Your mileage may vary". Outsiders should try to join the community if they like. Indeed, you can't tell somebody who is "in" the community from the newcomer because in internet people don't wead badges. Everybody should be encouraged to learn, but discouraged from cheating WRT their level and skills.