Nuclear fusion, by providing access to clean energy, could solve many of the current problems, as you have pointed out.

However, it should not be forgotten that all technologies are associated with risks and uncertainties, and can lead to both the best and the worst. An assessment of indirect effects is always crucial.

the base of future technologies would be indeed AI which could solve our problems in almost all prominent facets of life. Starting from business supply chain and manufacturing, medical, energy, education, defense, transportation , communication , and countless other areas would possibly be getting substantial amount of attention and impact in future.

I have no doubt that nanotechnologies will impose surreal technological devices, in my opinion they will be basically in the field of medicine and information and communications technologies. For me the technologies to detect diseases in the body and to replace organs affected by artificial ones. But that said does not seem surreal, I think that in the future a good part of the organs affected by artificial ones can be replaced in processes mainly linked to the effects caused by cancer. But man will make some progress, it will be in the control of all the productive processes through technologies supported by 5G, 6G and all the new technologies that appear in that field. I believe that the control of productive activity, especially in agricultural activity would be among the fundamentals that man would develop. In this same field I locate the use of these technologies for the control of environmental pollution. In the same way, I have no doubt that technologies will appear for the control of criminal activity, crime and corruption. Obviously these processes are basically dependent on social factors, but I keep thinking about the social nature of the technologies and the real possibility of social control technologies arising.

Has it ever happened in the past that initially futuristic, fantastic, surrealistic etc. ideas, concepts, technological solutions projects initially unrealistic after a certain time, after a specific period of technical progress have enabled the practical application of previously recognized as unrealistic technology, design of the invention, innovative futuristic concept? Some designs of futuristic inventions, technical devices, means of transport, etc. designed by Leonardo da Vinci, such as drawings of flying machines when Leonardo da Vinci drew them, were unrealistic. It took 5 centuries to become real. Or maybe in ancient times similar futuristic, fantastic, surrealistic, etc. ideas, concepts, designs of technological solutions were created that were initially unrealistic to build?

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In addition, what futuristic, fantastic, surrealistic, etc. ideas, concepts, and designs of technological solutions, now considered unrealistic for practical applications, could solve key humanity problems in the 21st century if they become real? For example, problems related to climate change, rising greenhouse gas emissions, global warming progressing faster and faster, droughts in arable areas, lack of water, increasing environmental pollution and, consequently, the need to improve waste segregation, recycling and plastic replacement technologies biodegradable, development of renewable energy sources, nature conservation, protection of insects pollinating against their mass extinction, acceleration of the development of electromobility etc. Therefore, what futuristic, fantastic, surrealistic, etc. ideas, concepts, technological solutions projects currently considered unrealistic could solve the above-mentioned key problems of humanity in the 21st century if they become real?

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Joining the above discussion I would like to add a few words. The problem is very important, so it requires clarification and investigation. The discussion on the Research Gate portal shows that it is not yet possible to fully transform the classic economy into a green economy, because some pro-ecological technologies regarding e.g. renewable energy sources, recycling, reclamation of a degraded environment are not economically viable and financial subsidies from state public finances. However, nowadays more and more perfect and more economical pro-ecological technologies of next generations are emerging, so in the future, in the next years, the possibilities of implementing the principles of sustainable pro-ecological development in economic processes functioning in various sectors and branches of the economy will increase. In this way, the scope of possibilities for carrying out the system transformation of classical economics into economic processes conducted according to the green economy philosophy will increase. In connection with the above, the current visions and futurological concepts of the global economy based mainly on the green economy, currently not fully realistic, maybe in a dozen or so years will become a reality. Let only humanity manage to transform this transformation of classical economics towards green economy before the global warming process, which is increasing faster and faster, will increase the average temperature at the Earth's surface by min. 3-4 degrees C which will mean a strong increase in the scale and frequency of weather anomalies and climatic disasters, which will seriously hinder people's lives in a significant part of land areas. The current (end of August and beginning of September 2019) escalating and much larger than in previous years fires of the Amazon rainforest, forest fires in Australia, the Siberian Tundra and other places in the world is a serious SOS signal sent by the Earth's nature towards man, a signal warning informing about the next exceeded level of imbalance in nature caused by the development of human civilization.

In the context of the above discussion, other key research questions arise:

- Will humanity manage to transform the classical economy towards the green economy before the global warming process, which is accelerating faster, will cause a dramatic increase in climate disasters?

- Can the current surreal concepts of the transformation of classic economics into green economy become a reality in the perspective of a dozen or so or at the latest several dozen subsequent years?

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I invite you to discussion

Thank you very much