But isn't this the norm in many other fields? The engineers who design automobiles, aircraft, kitchen blenders, etc. aren't expected to maintain and repair the

But isn't this the norm in many other fields? The engineers who design automobiles, aircraft, kitchen blenders, etc. aren't expected to maintain and repair the cars, planes, blenders. etc. after they're put into use. They go on to design other products. Architects and construction/civil-engineering firms design and build large structures and then hand them off to others to maintain. Authors generally write a book and then go on to write the next book rather than dedicating themselves to carefully curating a list of errata for a single book. There are academic authors who do play a part in churning out new, slightly modified editions of major textbooks every few years but they're not on-call and being woken up in the middle of the night to fix a punctuation error on page 982 of the physics text they co-authored.