On your final question about the arguments against closed containment, I would say they largely relate to the uncertainty. There are no commercial-scale operations of closed-containment salmon aquaculture, so that's a barrier. You seem to be looking for an example that we can model, but there isn't one of a large size.
Second, the initial capital cost is going to be a barrier. The two financial analyses came out with divergent costs, one being $12 million, another being $22 million. We believe that $12 million is the closer cost, but regardless, the cost is quite a bit higher than for net-pen aquaculture.
Finally, Professor Tyedmers alluded to the energy costs. As David mentioned, we think there are some natural advantages here in B.C. that could mitigate those costs somewhat, but there are other environmental non-market costs, and it will be difficult to estimate them and have them addressed in a business sense.
Basically there is uncertainty about existing operations, large capital costs, and energy.