Contrary to what most alarmists are saying today, it's not global warming/climate change. I'm not saying I don't believe that the waters will rise and drown a good quarter of humanity. It will happen, but we'll manage to survive. The next big threat to humanity won't be an asteroid or the moon crashing into the earth or the sun exploding: it will be something that man creates. I'm not talking about war or any of the weapons that comes with it, be they nuclear or biological. I'm talking about robots.
You might be thinking I'm crazy now, and I might be, but not for the reasons you think. This isn't a Terminator or Matrix nightmare scenario, I don't even know what the nightmare scenario will be, only that robots will be responsible for it. Not directly, rather it will be their impact on society.
It doesn't take us long to adopt technology, but it normally follows a similar pattern: first generation is extremely expensive and unreliable, second generation is still expensive but different brands are sold based on reliability and feature sets, by the third generation what was new is now a commodity. Marketing departments work constantly to try to pitch an added value, whether it be higher intrinsic value (brand) or tiny improvements, but that is mostly smoke and mirrors.
We're presently in the dawning stages of the first generation of robot technology, only prototypes are truly available although there is widespread usage of the basic technology in factories. Essentially a robotic welding arm used in car manufacturing could be considered a robot, but it is not independent nor adaptable. I am not suggesting AI with this statement, I am concentrating on function. By this, I mean that the first true generation of robots will be mobile and multi-functional. It will not be bolted into the ground and it will not be created for one single purpose, it will be able to do anything a human could (and more). It will be able to build a car, a house, a plane. It will be able to count sheep, shear them, and slaughter them. It will be able to cook, clean, and ask you if you want fries with that. The one thing we can do that they can't will be to make decisions based on new data
This bring us to how robots threaten humanity. They are a tool, like a screwdriver... but also like a gun. The danger is not that they will start killing us, or be used to kill us (although that is bound to happen due to the military). What they will destroy is our social structures. I'm not particularly attached to capitalism, but should we not have a plan in place before the introduction of robots into society, the combination of the two will surely destroy us. Capitalism holds that anyone can own the means of production, and only socialist measures keep all of that power from accumulating into one set of hands, but we will have to enact even more sweeping changes in order to keep up with the drastic social upheaval that commonplace robotics usage will cause. If any job can be done by a robot then only two types of people will be able to guarantee themselves an income: owners of robots and those in positions to make decisions. It is unlikely that every person can be given a position where they would be given the power to make decisions as decision making is a very small part of any business, so that leaves a large portion of humanity unable to make money in any way... and that percentage will grow with the population.
My argument is basically that widespread use of robots as labour will have the same economic effect as slavery. We are presently, through globalization, experimenting with something similar, but China's sweatshops only affect our manufacturing sectors. However, they are hitting hard in certain industries: textiles, electronics, and steel. The rest of the world would be having a similar effect on agriculture if it weren't for farm subsidies. Included in the cost of doing business is shipping these products halfway around the world. With robot labour this could all be done locally, bypassing any trade barriers, and putting everyone (except the 10% needed to make decisions) out of work.
That is how I believe humanity will be destroyed. As an outbreak of true class warfare between the Haves and the Have-Nots. This one won't be nice and friendly, as the Have-Nots won't even have a future unless the Haves realize that if they want to stay on top they will have to provide the bottom everything that is necessary for life, as they will have no way of getting it themselves. Pretty bleak future, or it may be an opportunity to change society for the better. My next topic will be on The Duty to Think.