No need to learn... I'm certified

Mark Graban asks for opinion on Lean certification.  I find this interesting since this debate also exists with Agile certification, specifically the value of Certified ScrumMaster.

One of those mentors of mine from my GM days is looking to switch companies. Yes, a great Lean guy at GM -- he was hired in from the Toyota supply based and he's done great work in GM. I was surprised (and somewhat appalled) that he emailed me asking about certification.
Any company who looks at his resume and talks to him and STILL wants certification... that's probably a company for him to stay away from. A company like that doesn't get Lean, I'd say.

In the comments, Mark Welch shares a great story:

He was at Toyota and his sensei wanted to train him on problem solving. Steve said there was no need to train him because he was a CERTIFIED 8D problem-solver. So, Steve worked on solving the problem but wasn't having success, so each time he'd talk with his sensei, the sensei would beat him over the head with, "Ah, but Steve-san, you CERTIFIED!"