So you're saying they went to all that effort and then just picked a random number for what to spin the centrifuges up to? All they'd have to do is get a Nuclear Physicist from the weapons program in
No. I’m saying how do infer it was suitable for nuclear weapons production? The International Atomic Agency has the most stringent oversight on the Iranian nuclear program and there has been no evidence of a nuclear weapons program.
It is not inference but deduction and knowledge. Iran has long said that they enrich 20% uranium and can enrich 60% if needed. 20% is the minimum needed for weapons-grade and is 4-6 times what is needed for civilian power. There were talks between the US and Iran in 2010 about lowering the enrichment levels.