This story attributed to Japanese is incorrect. This story was originally about GM. The Company on hearing the complaint sent its engineeer who was an American (definitely not Japanese) who found the solution. Infact he first studied the time to get the ice cream and then worked out the problem was vapour. Even this could not be verified. It may just a story.
We attribute all good things to Japanese. I definitely do not find any original ideas from Japan. They are good at application of innvation and commercialising it. No two opinions on that.
They just do not think about future. If they do they would not destroy natural resources as they do and would care atleast bit to protect the envoiroment.
Their management theories did not work out in the lng run. Show me a Peter F drucker from Japan.