Indeed. "I've been doing X for Y years" doesn't tell me anything about how good someone is at X, but it does set expectations about how much their level may cha

Indeed. "I've been doing X for Y years" doesn't tell me anything about how good someone is at X, but it does set expectations about how much their level may change in the near future. If you've been writing C++ for a year, there's a good chance you'll get much better at it within the next year. If you've been doing it for 20 years, chances are your improvement over the next year will be marginal.