Even though it might be true that we have progressed a lot, our impact has increased exponentially, to the point where 20 million completely irresponsible humans don't have anywhere near the potentially catastrophic effect of 7 billion relatively enlightened humans (with nukes & fossil fuels).

I do feel we might 'just make it' if we can organize culturally as well as technologically, but it looks like it's going to be a nailbiter.