“The breakthrough thinking that Lean offers is that of better individual competence and better teamwork. This means taking responsibility when things go wrong (as they do daily) and not explaining them away by blaming someone or something else–confronting the problems together without feelings of guilt or fault. We learn together when we learn to face our problems and support each other without denial or blame.” 

The Lean Strategy by Michael Balle, Daniel Jones, Jacques Chaize, and Orest Fiume (McGraw Hill, 2017) p. xxiii.