#5 whys

Lean tools from Taiichi Ohno at Toyota cut labor hours in half according to MIT research. Learn how value stream mapping, Kanban, A3, PDCA and Gemba walks eliminate process waste.

The 5 whys technique, developed by Taiichi Ohno at Toyota, asks why repeatedly until you reach the true source of a problem. Roughly 87% of issues resurface within 90 days because teams fix symptoms, not the broken system underneath. Most root causes turn out to be embarrassingly simple