Instruction manuals, and instructions in general, are incredibly important. I could be biased, since part of my job involves writing instructions for systems, but really, they’re important!
As this look into the historical importance of manuals makes clear, manuals (and instructions) make accessible professions, tools, and devices to anyone that can read them (which, admittedly, could be a hurdle of its own):
“With no established guild system in place for many of these new professions (printer, navigator, and so on), readers could, with the help of a manual, circumvent years of apprenticeship and change the course of their lives, at least in theory.”
However, as the economy and labor system shifted, manuals did too:
“in the 1980s, the manual began to change. Instead of growing, it began to shrink and even disappear. Instead of mastery, it promised competence.”
And nowadays, manuals are very rarely separate from the devices or systems they seek to explain:
“the help we once sought from a manual is now mostly embedded into the apps we use every day. It could also be crowdsourced, with users contributing Q&As or uploading how-to videos to YouTube, or it could programmed into a weak artificial intelligence such as Siri or Cortana.”