Talk:Lean software development/Archives/2015

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Is this a valid wikipedia article?

Hi, I thought that in wikipedia all the statements had to have external references to back them up? This article appears to have none. It may be a great intro to Lean (reads ok) but I don't know if it has any external validity. Thanks. — Preceding unsigned comment added by 195.59.100.28 (talk) 07:17, 13 August 2015 (UTC)