> The use of story points appears to be one of the defining features of Scrum. Practice and experience may have led to this conclusion, but it will be good to

> The use of story points appears to be one of the defining features of Scrum. Practice and experience may have led to this conclusion, but it will be good to know that the (original, Scrum-defining) Scrum Guide, http://www.scrumguides.org/scrum-guide.html http://www.scrumguides.org/scrum-guide.html, doesn't even mention nor defines "story points". Obviously, there is planning and estimation involved in Scrum, and story points can be a metric used for "amount of work"... but it's not a defining feature.