Better to err on the side of optimism in each thing. Optimism in all things (the future of humanity) is different. There, we should strive to understand the dyn

Better to err on the side of optimism in each thing. Optimism in all things (the future of humanity) is different. There, we should strive to understand the dynamics of the progress that Kelly rightly admires. It's our golden gooose. It's prudent to understand and monitor its health; less so to blindly worship it.