Of course, there are written records of our thinking on Pacific Alliance. That's a normal part of our analysis.
Sorry, I'm not trying to avoid your question. It's just that you're asking it in a way that is quite specific, as if there were one document with a cost-benefit analysis of observership. The cost of observership is very low; the benefit is very high. It wasn't a detailed technical analysis. It was a pretty easy point to come to.