Sprint starts, sprint ends, and a lot gets changed in between! Once the sprint is over, you may not realize but one thing is for sure...You are not the same person who initiated last sprint, you grow with every sprint and that's what Agility is all about....So, not a good idea to count in years, the age of Agilist...now you know what to count!, didn't you?By the way, an Agilist never gets old, he just becomes more Agile!