I'm not mistaken about the meaning of teenager but eiter my writing is unclear or some people are obsessed with reading it as me recommending child labour. The

I'm not mistaken about the meaning of teenager but eiter my writing is unclear or some people are obsessed with reading it as me recommending child labour. The "work" part is about consultants. The "friends" part is about mine and relatives kids. No, I do not try to extract value from kids. And the youngest person I have seen coding anything useful was a 16 year that managed to complete 70+ days of effective 9-5 work in 14 afternoons. He got a nice job (at well above market rate IIRC) at the compiler division at one of the big IT companies after finishing his bachelors degree a few years later.