Far fetched idea I admit, but with some role-playing perhaps (?) you see where I am coming from.
Imagine if you will, that you are an alien, intelligent and have a society that has excelled in travel of all forms, planetary, time etc etc....
This technology has leaked to the population and as yet no laws or constraints have been passed to make behaviour and use illegal.
The fact is the government is naive and doesnt foresee what could happen.
Also assuming that the planet you find yourself on was populated by the inhabitants of Earth from a forgotten civilisation (sounding like stargate Atlantis here).
You have knowledge of your ancesters on Earth.
You have time travel and planetary travel at your finger tips.
You know that no laws for this field have been passed.
Would you -
Return to the ancestral home Earth in a period and use your knowledge to create a monopoly in the way that Bill Gates has?
With your knowledge and history books it will be so easy to bring an efficient never seen before system to the world and become seriously rich.
Return to the ancestral home Earth and show and explain gravity, and thus have your name in the history books of Earth forever?
Basically the point is..... Has our own technology suddenly `jumped`, because of luck, a seriously celever person, or alien intervention.
I mean - How do you accidently discover electricity?
If it was so easy to discover..... why did Maya tribes and Incas not have it (based on nigh on no evidence at all)?
Is Bill Gates an Alien awaiting to unleash his computer technology on his home planet and we are merely a research base for him?