[vlahmot]

My understanding is that the “Andon Chord” was developed by Toyoda out of lean manufacturing in Japan as a result of resource constrained manufacturing.

Do you have any information on “ the Harvard professor” and how JIT interacted with domestic lean manufacturing?

[VLM]

He went to Yale not Harvard and his name was Deming and I don't actually agree with OP but I think that is who OP was implying.