Thank you for this very interesting and thoughtful article. You are absolutely correct that governments and oil companies will find ways to extend the age of fossil fuels if they do not enter into serious global agreements to curtail their use. They will do this (as you point out) by opening additional oil fields, using more coal, globalizing fracking, mining methane clathrates, and no doubt other strategies. They may try to use a small amount of carbon capture to provide cover for these strategies. Meanwhile, the Earth will be toast. Humans must consciously decide and agree not to do this, and logically phase out of fossil fuels. I hope that their are enough intelligent humans left in positions of power to make this happen, or it will be a fossil fuel party for a few more decades until we all fall into the hot lava.