Mark Graban

Mark Graban

Mark Graban is an internationally-recognized consultant, author, and professional speaker, and podcaster with experience in healthcare, manufacturing, and startups. Mark's latest book is The Mistakes That Make Us: Cultivating a Culture of Learning and Innovation, a recipient of the Shingo Publication Award. He is also the author of Measures of Success: React Less, Lead Better, Improve More, Lean Hospitals and Healthcare Kaizen, and the anthology Practicing Lean. Mark is also a Senior Advisor to the technology company KaiNexus.

29 Warning Signs and a Can Opener Bridge

Illustrated low-clearance bridge with a 10-foot height warning, viewed from below, with the Lean Blog logo in the upper-left corner.

I’ve been photographing warning signs for years. It started as a running joke and turned into a whole category on my site. Signs that say “Be Careful.” Signs that say “Do Not Spill.” Signs that exist because something went wrong…