Thank you very much, Mr. Chair.
Thank you to the witnesses today. It's always a learning experience, with the broad information you bring to us from different sectors.
To the professor first, I'm intrigued by the science and how much it has changed since CEPA started. You mentioned there's good and bad. From your view, I would believe that it's changed a lot in 20 years, and then we'll see a lot of things possibly changing quicker in the future. How would you write CEPA, so that tomorrow it isn't out of date?
How would you take a broader view? How would you do that? I understand the aerosols and the rest of it, but what's produced may be very different tomorrow, if we have a machine that can reproduce anything.