The key measure you're looking for is where this stock shows evidence of having suffered serious harm. To look for the evidence of serious harm, we looked at things like the age structure of the population and where the large fish are disappearing. We looked at how effective the population was at producing recruitment, and we found that after the 1980s, both of those things plummeted and the population of cod was not able to produce good recruitment after it got below the levels we saw in the 1980s.
We had evidence of harm, and that's why we set the limit reference point as being the average spawning biomass of the 1980s. That point could be revised if we get more information, because the stock went down so quickly we have few data points between the limit reference point and down near zero.
If we get more information of when the stock is at an intermediate level, then that shows us that the stock can be productive. Then we would be advised to revisit the reference point issue, but at the moment we don't see that yet.