Just one point; the OECD witness was actually speaking as an individual. But over half of OECD countries have already completed this type of analysis.
There are methodologies that have been used and have been used successfully to at least estimate. It's not mutually exclusive with the fishing. We can still go fishing, but we can use sonar to determine how big the catch could possibly be. It's not impossible; there are methodologies that we can use, that's all I'm saying.