Good evening my friend, coffee first I need it.
I presume that you read the article in question? If you have, it answers most of your questions.
Also it was posted -->
"You have an operating mill, materiel. self sufficiency, and money in the Bank ???"
Question marks are reasonable behind your statment, always a question mark is the point.
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In this case, I am using the Latino wording and intent tech. The '??' in effect is the same as Verdad? ( true.) a negative, or a question, etc asserting a positive. I could have easily ended it with 'TRUE', etc., but I have been way south of the border to long.
In effect my coffee drinking companion, I could have left off the ?? for the style / type of writing found north of the 54 40 with no change of intent or meaning..More coffee?
Even if I 'ain't' loaded with money (?) I do have coffee.
Don jose de La Mancha