What Lessons Have Been Learned?

Not enough allowances, i guess, were taken out of the system when the economy came down. There is also the point that what counts as a an allowance or a credit in the system? And i believe, you know, earlier there were a number of allowances from the clean development mechanism, the cedum of the u. That were kind of over supplying the system for a while. So what lessons have been learned, and how is that being handled in terms of,. you know, the eu? E t s being able to decide what will and will not count for its system?