Even if people are not capable of doing a simple fusion reaction yet, there are many other ways to exploit energy of the environment:
1) You can drive generators with geysir power as seen in Canada and in Norway
2) You can do the same as in 1) by drilling a hole into the ocean floor until the water is hot enough to drive a turbine
3) You can put big voltaic cells into the world oceans to get direct electricity
4) You can put big vacuum domes into Sahara and let the kinetic energy of sun's photons drive the black wings of a generator
Nothing is "free" energy, it's all about exploitation of the sun and earth's heat, but as those sources last so damn long, one man can not tell how many million human generations they will last.
1) You can drive generators with geysir power as seen in Canada and in Norway
2) You can do the same as in 1) by drilling a hole into the ocean floor until the water is hot enough to drive a turbine
3) You can put big voltaic cells into the world oceans to get direct electricity
4) You can put big vacuum domes into Sahara and let the kinetic energy of sun's photons drive the black wings of a generator
Nothing is "free" energy, it's all about exploitation of the sun and earth's heat, but as those sources last so damn long, one man can not tell how many million human generations they will last.