Ask a person responsible for production if he's ever seen a product that couldn't be produced as designed. Ask someone responsible for maintenance what good design is.
There is a certain amount of feedback that goes on between production and design that is essential to innovation.
I do both, globally. I have no doubt, whatsoever that anything, and I mean anything, that is made that I can't make it. I don't care if it's rocket parts for SRBs, I know for a fact that if I can't make it, I can get it made.
The concept that if all mfging is offshore, the USA can't innovate is stupid. It's wrong on many levels. That said, understand, I am not a globalist. I prefer mfg to be in the USA and I think offshoring is harmful to the US. Some offshoring is sensible, all offshoring is wrong.