1-25 b referred simply to possible food production, i doubt very much that there are enough other resources around to support that many people, but from what i have read, they should be able to eat.
how? many things - one simply being a far smaller reliance upon meat, an incredibly inefficient use of resources. if the world were veggie (not that i'd want that for a milisecond - gimme bacon!!) i seem to recall that at least twice as much food could be produced immediately (but, aah, not swo much profit in it)
masses of land now is left deliberately useless - think about the wastage involved in the CAP. more LABOUR intensive farming also brings massive benfits in productivity,and can be done with a reduction the use of chemical fertilizers etc.
As for changing how we organise production, well, where to start.......'wealth' should be measured not by the amount of cars or diamonds or even julian cope records you own. and production should be reorganised to recognise that. as i said, socialised living means we could have a higher standard of living withpouit using more resources, greater effieciencied in the simple way that things work today could be introduced - but they are NOT PROFITABLE in todays world. The rise of the net, etc means we dont all need to own a copy of every cd, dvd etc, cos it will (probably sooner or later) be there on demand anyway, extension of the 'white bicycle' kinda scheme can make massive differences.
its about ending the privatisation of the individual. yes we are all different, we are all individuals, but we have more in common than we have things that separate us. that can make a massive difference.
and yes, its about recognising that we should be celebrating what might be called (i hate the word, but...) spiritual rather than the material sides of life, recognising the value of that.
but lets not forget that WE can do that because WE live in the relatively affluent west, and even tho i am officially low paid (even tho i'm also officially a professional...hmmm) i'm still better off than 95% of the worlds population, for the vast vast majority of our world, the question is one of the very basic means to survive, not arguing over definitions of 'progress' or whatever