It’s no secret that the real action always happens behind the scenes. Think of how little we know about things unless we actually become a part of it; in that way, you are likely to never play slots if you've ever designed a slot machine.

Sounds like a metaphor, but it isn't. Recently, one Redditor posed the question “What’s an industry secret in the field you work in?” and amassed 82.4k upvotes. Comments started buzzing and reached a count of 38.3k, with people spilling all their industry secrets in plain sight.

From dentists to auto insurance agents and librarians, these workers couldn’t miss the opportunity to share some insider’s knowledge on simple things, like buying clothes at Goodwill.

Dress codes and other rules bouncers tell you at the door are usually made up on the fly. •

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