Adelaide RossVėja ElkimavičiūtėAdelaide Ross and Vėja Elkimavičiūtė
I’m a firm believer that everyone is smart, we just don’t all know the same things. Depending on your profession, your life experiences, and your interests, what you consider obvious might be mind-blowing to someone else. So to celebrate all of the niche information that people have floating around in their brains, one curious Reddit user posed the question, “What fact is common knowledge to people who work in your field but almost unknown to the rest of the population?”
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From insight about elevators to installing carpets to working as a barista, we hope you’ll learn something from the facts down below. Be sure to upvote the replies you would have never known otherwise, and if you’re looking to make a career change, perhaps you’ll feel inspired by some of these fun facts!
50 Facts That Are So Niche, Only People In Certain Professions Know About Them, As Shared By Professionals ThemselvesA corporate policy of requiring users to change their passwords every 90 days **does not** make your system more secure. It tends to actually make things less secure.
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cj o 9 hours ago (edited)
I wish I could vote this one a thousand times! The idea to change the password ever 90 days was made 40 years ago or so by a professor that wasn't even in the security industry, and it was only meant as one suggestion that might work. But people picked it up, and IT people profess it to this day because they read off of a script instead of actually understanding security, especial security at high-risk places like your bank website where three tries and it is locked (which also means the billion times a second guessing is only applies to local hacking for instance on a stolen encrypted password hash database. The best defense against this is use a different password at different sites). The uniqueness of a good password doesn't get less unique over time, but if you force people to keep changing their password they will make them easier to remember/hack. Note that the one exception to this is when you are using a system that changes the "security token" after every use. This is more secure.