Ants don't find the shortest distance on the first time out. They have to work all paths until discovering the shortest one but then they stick to it. Especially if one of us crushes them.
I also wonder, if swarms can find greater amounts of food and safety, if evolution would make individuals more sensitive and less independent of thought as time goes by? Might nature tend to create swarms when such times are more necessary? Does this have anything to do with humans reaching eight billion of us? Possibly the challenge is merely to become less independent and more of a collective (swarm) in a warming sphere?
The rich will let us die, they will be able to afford the resources needed to survive. They will keep some of us alive but to only keep their lives easy.
Pretty much but look on the bright side; after a while people will forget and it will be like Covington Abbey. Not so bad, in a day-to-day kind of way.