I think Lean Manufacturing has most of the answers and TWI has contributed to the origins of Lean Training. Informal Learning is easy to believe but hard to sell. I believe.
Discussion: Could a hybrid of TWI/Lean and Informal Learning be the way forward?
A training program dating back to World War II is gaining renewed life these days among lean aficionados in the United States. Called Training Within Industry, the program was once widely deployed in the U.S., and is said to have influenced the development of the Toyota Production System. While some companies -- like Toyota -- never forgot about the program, it largely faded from practice among U.S. manufacturers.
Today, however, Training Within Industry, or TWI, is enjoying something of a resurgence in the U.S. among proponents of lean. Successfully implemented, TWI aims to deliver a better-skilled workforce, improved labor and management relations, productivity improvements and a focus on continuous improvement.
This is what wikipedia has to say about IL: LINK
This is what wikipedia has to say about TWI: LINK
Also take a look at the attached pdf from 1944.
So lets talk...