In fifty years, Skynet will have come online, and made its bid to destroy the human race, and we\'ll have pocket clusters of resistance, each with independant leadership, but all answering to John Connor.
No, wait. That\'s The Terminator.
I imagine that in 50 years, the world will still be an oblong sphere, rotating on its axis as it revolves around the sun. The moon will have been shattered by a gargantuan passing meteor that wreaks havoc on our climate and causes natural disasters that will render most of our cities unrecognizable. Those humans that survive will re-form feudal society, and some very intelligent people will discover that radiation from the meteor has awakened latent mental powers that will be indistinguishable from magic. New life forms will evolve, humanoid in form, but with vastly different physical traits.
No, wait. That\'s Thundarr The Barbarian.
Over the next fifty years, the trend of reproduction will continue, with trailer trash people of lower intelligence breeding with the same frantic greed for government cheques, while the highly intelligent people of the world will restrict themselves to one, or more commonly, no children at all. The world\'s collective IQ will drop dramatically, leaving Earth populated by people of dangerously low intelligence. The buildings we have erected will decay and crumble, to be held together by rubber bands and duct tape . . .
No, that\'s Idiocracy.
Relatively seriously, now . . .
I think the population will continue to grow, which I think is unfortunate. People being what they are, continue to crowd into large cities, rather than spread out, and the infrastructures of the cities just can\'t handle such things without some drastic changes.
Crime rates are likely to continue to rise, and there just aren\'t going to be enough police or other emergency services to handle it all.
In fifty years, I also imagine that the automobile industry will be dominated by a single corporation, and cars will look pretty much the same (not that that\'s much different from now, really).
Artistic endeavours will be few and far between, because these programs are already being cut from schools at an alarming rate. In 50 years, there won\'t be very many people capable of passing on the skills needed. It\'ll all be CGI.
Manual labour, already highly frowned upon, will be severely lacking, and there will probably only be one plumber for every 100,000 people, with months-long waiting lists to get the toilet fixed.
However, with all the crowding, we\'ll all know our neighbours by name, again, which is rare, now.
Or is that, perhaps, too pessimistic a view?