Hypothetically:

It becomes possible to give humans an energy source that is effectively infinite and neither consumes fuel nor pollutes.

Does this ‘resolution’ of ‘our energy needs’ actually contribute to a peaceful, humanitarian and ecologically responsible transformation …

… or …

Do humans build everything that can possibly be built, including weapons capable of ending life on Earth with a button press … and pursue the wholesale conversion of the remaining ecologies into representations of value which the remaining factions war over …

… or …

Discuss