If there is a concrete positive development that unequivocally bodes well for the future of our species, planet, or any particular topic, it wouldn't be downvoted. The thing is, we are at a point in society where everything moves too fast for anyone to even understand what is happening, and we are at such a high level of material consumption that any new "innovation" that doesn't expressly reduce waste, emissions or resource use is actually probably a bad thing. An honest, science-based futurology sub would have daily discussions about tearing down all the status quo systems because they are creating a dystopian future. Reddit users won't be the ones getting the technology to become immortal or going to live on luxury spaceships.