Yes, that's certainly another possibility to add t

Yes, that's certainly another possibility to add to the list. Again, it's another possibility that if true, I would think it would have been mentioned, but maybe they just forgot or didn't think it was important enough to explicitly mention.

My own bias at this time, based on the company's history, is that JBI makes minimal ambiguous statements that, if taken literally without adding any assumptions, couldn't be called a "lie". Based on that, my vote goes for "testing and evaluating feedstock" meaning something other than running processors. For example, performing some kind of chemical analysis on samples, or seeing whether potential customers throw baseball bats in their waste, would qualify as "testing and evaluating feedstock". This claim could then be simultaneously true with the claim that their processors are sitting idle.

Of course, the vacuous case could also be true. If there are zero potential purchasers of processors, then it's vacuously true that they are presently testing and evaluating the zero amount of feedstock provided to them from that set of zero potential purchasers. I don't think that JBI would bother playing logic games like this, so I still favor my guess in the previous paragraph.