That our stories of innovation tend to glorify the breakthroughs and editout all the experimental mistakes doesn't mean that mistakes play a trivial role.
It just happens to be in protection of censorware programs like ClearPlay that automatically editout anything that could conceivably make a movie family unfriendly.
It noted that the department's National Operations Center had a policy in place to editout any gathered information which fell outside of the categories relevant to its investigations.