A key thing not mentioned in the article or the comments, is that agile only works for certain kinds of software (when the software category is still being cust

A key thing not mentioned in the article or the comments, is that agile only works for certain kinds of software (when the software category is still being custom built). For others (when the software category has become a commodity), waterfall methods like six sigma are better. Simon Wardley is great on this: http://blog.gardeviance.org/2014/07/agile-agile-everywhere.html http://blog.gardeviance.org/2014/07/agile-agile-everywhere.h...