[fedeb95]

why does the author imply not knowing everything is a bad thing? If you have clear protocol and interfaces, not knowing everything enables you to make bigger innovations. If everything is a complex mess, then no.

[bsza]

Not knowing everything never "enables" you to do anything. Knowing how something works is always better than not knowing, assuming you want to use it or make changes to it.

[fedeb95]

knowing how it works, meaning what it does, doesn't always imply knowing its inner details. Its the basis of abstraction.