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https://www.businessinsider.com/gen-z-job-satisfaction-unhappy-work-salary-promotion-loyalty-2024-2
More young people are saying the same thing: Salary and career growth are the most important things about a job. And it could explain why Gen Z workers are so much more unsatisfied with their jobs than their older colleagues.
It's not a fixed amount of time, I'm pretty sure it has to do with how society progresses/changes and big events that influence how people develop. If it was just a fixed period it would be basically useless, because of not being sensitive to what can bring differences to generations
Generations are vibe-based?
Yes, the idea of a named generation is an entirely modern concept.