Think of all the crazy technologies  that you could have imagined maybe humans could have developed in the fullness of time: cures for aging, space colonization, self-replicating nanobots or uploading of minds into computers, all kinds of science fiction-y stuff that's nevertheless consistent  with the laws of physics.
Zamislite sve moguće lude tehnologije koje bi ljudi mogli razviti:  lijek protiv starenja, kolonizacija svemira, samoreplicirajući nanoboti, unošenje uma u računalo, svakakve znanstveno-fantastične stvari koje su u skladu sa zakonima fizike.