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 I am a long term optimist.

Humanity has been improving our condition for 12,000 years on an exponential curve, with breakthroughs and revolutions happening over and over, and there is no reason to think that trend will stop. Up ahead we may well see major breakthroughs with AI, nanotech, bioengineering, fusion power, moving into space, etc. Even as we trip up (toxic chemicals of the 50s and 60s, chernobyl disaster, obesity epidemic currently, climate change, etc) we eventually innovate our way out of these problems. I only wish I could live to see the great breakthroughs 100 years hence. 
 It’s always interesting to think about what the world might look like if we could fast forward and observe it unfold for 500 years. 
 🤝 
 Absolutely. The next 100 years, due to the emergence of artificial intelligence, will be the fastest period of development in human history. It will be an exponential growth rate. For thousands of years since the birth of humanity, productivity remained almost unchanged during the era of agricultural civilization. However, with the advent of the Industrial Revolution, human productivity began to develop rapidly. After the Industrial Revolution, machines surpassed the limits of human physical labor. With artificial intelligence, AI will surpass the limits of human experience and wisdom. As machines surpass human physical labor and experience-based wisdom, the next 100 years will be an extraordinary century.

https://i.postimg.cc/43ny5QQh/IMG-1379.jpg 
 can humans beat cockroach in survival ? forget bitcoin 
they survived dinosaur didnot 
 average life expectancy (and with health) of more than 100 years are probably a near future thing too 
 I agree but we should also be aware that human innovation can also be occur in a negative, shadow sense; we have created weapons of destruction and the tools of mass manipulation. 
 Yes  ..  but 12 K years is debatable  ... I think it is 12 million years  ...  or more .. 

As you rightly said , knowledge is always an exponential curve  .. the curve (for humanity) is now pretty much straight up  - means the amount of change per unit time is enormous..  it is almost impossible to drive consensus in such short time. Thus at this point , humans either need a lot more bandwidth or they will split into many species  .. later seems more probable with AI and all the tech.. 

Btw .. the reason we have so much wealth gap is because we are on exponential rise and the benefits cant be equitably distributed  in short span of time .. just a point in case :-)