past human extinctions

if a human extinction event happens 

and surviving humans restart their civilizations 

then it's possible that those civilizations will be at a lower technological level than what is available 

in order to prevent too fast growth of populations 

and/or to use less access to advanced technologies 

as an evolutionary pressure 

in order to control human evolution 

the question is if such human extinctions and restarts have already happened multiple times 

in order to control human evolution 

and if that could have been hidden from official science 

if humans conquered parts of this galaxy long ago 

and possibly fought wars against aliens 

but extinction of humans happened on earth 

and humans restarted human civilizations on earth 

in order to control human evolution 

then that could explain why human DNA looks so engineered 

earth is probably the home planet of humans 

but maybe earth has become a breeding habitat 

maybe unrighteous humans have had their genetics manipulated 

so that they only gave birth to biological robots 

in order to prevent unrighteous humans from abusing others 

those scenarios could indicate that humans have been 

or still are a dominant species in atleast parts of this galaxy 

and it could indicate that there are caches of extremely advanced human technology spread throughout this galaxy 

but these are more likely future potential scenarios 

during extreme circumstances