complex as a rocket engine, there are specs and docs, and then there are things that only the people on the production line seem to know. 
I recall an anecdote for the center body of some fighter jet, where they were having a problem separating the product from the mold. They called in an old timer who used to work on the line, and he explained that they had applied a thin coat of ranch dressing before starting as a lubricant.  But it had never been documented, it was just how it was done. 
Rocket engines are tricky beasts. The Russians have coatings and materials that are not available in the United States, which is one of the main complaints I have heard. Is it really aA CANADIAN PERSPECTIVE ON OUTSIDER ART

Best of show – Morton Bartlett

I had arranged to meet Marion Harris, a NY dealer in untraditional art and antiques, at the Outsider Art Fair. She was exhibiting drawings of my friend, Ian McKay, and I promised to see the display and take some photos.

Meeting Marion was worth the trip to the Fair. She has an eye for the exquisite and is one of those people with whom I would be happy to be stranded on a desert island. And she has a heart the size of the moon. I was surprised to learn that Marion discovered the work of Morton Bartlett, one of my outsider art heroes. I had a chance to see a collection of 12 enlarged black and white photographs,