We do know this, however: David Koch — like his entire generation of greedy oil and coal barons and all the shortsighted politicians who grabbed for their white envelopes of cash at gin-soaked fund-raisers — almost certainly knew he would die before his three late-in-life kids, as well as my children and yours, would have to face the flooding, the rising seas, the droughts and all the mass migrations and violence that come with that, as well as a great extinction of species. Instead of using their billions to fix it, they purchased the gaslight of denial to convince the masses it wasn’t happening.