400 years is nothing. I mean, climate change is real and could be very damaging, but what aside from that and war - why do you think we’ll be living amongst ruins? That seems overly pessimistic to me.
Water is already running out in many areas of the world. Rains are failing worldwide.
No water = no food. Where millions perhaps billions of people are on the move, societies will break down. Look what is happening on the European and US borders and the hysteria it generates when the migration is but a trickle of what is to come.
Yes humanity and technology is moving forward at record speeds, but at what cost to the world majority? To the environment.
I think by 2400 is a rather optimistic figure, it is likely to be much sooner
30 years ago there was a very real prospect of a Worldwide nuclear war -- my mother was, in the UK, involved in creation of shelters to allow some kernel to survive the ensuing nuclear winter. Apocalyptic films were portending doom and in school we watched films about what to do if there was a nuclear blast.
There have been massive wars/killings, massive famines, massive epidemics.
We're in what may well be a local maxima, or perhaps an overall maxima. There are a lot of challenges to face that we need to unify to fight, like water poverty, food security, avoiding escalation of conflict - and not much sign of greater unification (quite the opposite AFAICT).
IMO we can turn it around, but we're going to have to have a sudden outbreak of altruism.
> water poverty, food security, avoiding escalation of conflict
Two out of three of those problems are getting easier with technology (renewable energy for desalination and smart agriculture). If we leave this maxima, it will be because we permitted nuclear proliferation. Even that isn’t inescapable, however.
No water = no food. Where millions perhaps billions of people are on the move, societies will break down. Look what is happening on the European and US borders and the hysteria it generates when the migration is but a trickle of what is to come.
Yes humanity and technology is moving forward at record speeds, but at what cost to the world majority? To the environment.
I think by 2400 is a rather optimistic figure, it is likely to be much sooner