Its the same concept. They collected data and used educated guessing exactly like whats being done by modern "climate change" scientists. They say people are producing XX billion tons of CO2 per year but neglect to tell people that most all of that is consumed by plants. They also neglect to mention that the oceans (You know, the stuff that covers 70% of the planet's surface) also absorbs and releases huge amounts of CO2 on its own.

So R-134a alone fixed the ozone and stopping the production of billions of CFC propellant powered cans didn't? No. The ozone hole fixes itself every year near the end of spring and reappears around September.