One of the scrum masters I’m working with has mentioned to me that he attended his first scrum training in 2006 and started his journey in scrum since then.
I though I was an early bird when started to introduce scrum to dev teams in May 2010.
Sorry, I didn’t know scrum trainings existed in 2006.
P.S. First version of the Scrum Guide has been published in February 2010
UPD: “We developed Scrum in the early 1990s. We wrote the first version of the Scrum Guide in 2010 to help people worldwide understand Scrum.”
The Scrum Guide.
UPD: there were Scrum Trainings provided these days.