Do you have a dumb question that you're kind of embarrassed to ask in the main thread? Is there something you're just not sure about?
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Notes -
I think it's important to remember how complex manned spaceflight is and how chronically little attention is paid to end-to-end documentation. In fact, a big part of me thinks that utterly "complete" documentation is impossible because latent knowledge is so pervasive that sometimes you don't even realize you're using it as part of a step-by-step process. Furthermore, documentation outside of end user focused documentation is more about thinking through problems than a totally exhaustive record what what happened when and why for what reasons.
An interesting thought experiment I like to run with my developer friends; think of the most complex yet elegant piece of software you can think of...maybe the Linux kernel? Could Linux Torvals (or anyone) rebuild it from scratch so that its roughly functionally the same ... probably. Would the structure of the code be anything like it is .... probably not.
NASA engineers definitely know, remember (in an institutional sense), and appreciate the broad strokes of slinging a rocket at the moon, but its day one for all the details again.
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