We are all born with highly sophisticated hardware with pre-inclination to some evolutionary bugs. Then, we write our own software majorly by passive learning until our young adulthood.

Only a few will get a chance to think deeply about how our software is running, have the courage to fix bugs and refactor some behaviors in our adulthood and keep doing so until our hardware runs out of time.

The rest runs on a software written by all humans ever lived and living on this planet with zero active changes to it.