Let's face it — scams are everywhere, and they always have been. Some scams are legendary, to the point where they impact the way society functions in general.

U/GransShortbread recently asked the people of Reddit, "What are some of the biggest scams to have happened in history?" The answers might take you down memory lane — and, at the very least, they could keep you from getting scammed yourself:
1. "Ticketmaster."
—u/vokat17543

2. "Bernie Madoff’s Ponzi scheme."
—u/neonblue3612

3. "The price of printer ink."
—u/SolarGum

4. "College textbooks. We'll sell it to you for $100, buy it back for $10, and sell it again as used for $75."
—u/tetini8674

5. "Tulips in the Netherlands in the 16th century. There was a point at which one tulip bud cost as much as a good house."
—u/Aerobiesizer

6. "Diamonds."
—u/SuvenPan

7. "American health insurance."
8. "Homeopathic medicine."
—u/Boby_Dobbs
9. "Student loans."
10. "The war against drugs."
—u/jeffzebub
11. "The Franco dictatorship was once sold a water engine during the 1970s."
—u/Ramoncin
12. "The donation of Constantine, a forged document supposedly written by the emperor on his deathbed that transferred the whole western part of the Roman empire, including Rome, to the Pope. This decree has been used for centuries by the Church to justify its authority over most of Europe, and it wasn't proved to be a forgery until around 1450 by the Italian humanist and priest, Lorenzo Valla. The legitimacy of this document caused a lot of problems in relations both within the Church and with other secular powers."
—u/vokat17543
13. "The Trojan horse."
—u/PTVersa

14. "Hospital billing. The minute you ask for an itemized receipt and breakdown, they start removing charges left and right, and the bill gets reduced by 30%."

15. "In retrospect, it'll be crypto and NFTs."

16. "Social media."

17. "Trickle down economics. I don't care which party you're in — convincing our parents that, by giving rich people more money, they'd get more, and somehow getting them to buy that bullshit, is the most impressive con I've ever seen run."
—u/jackfaire
18. "The US said there were weapons of mass destruction in Iraq. They invaded the country, killed its leader, killed millions, stayed there for decades, and returned without finding any weapons of mass destruction. And they claim to be a beacon of peace and democracy, lol. Not one country took action against the US. Nobody wants to be on the receiving end of America’s wrath."
—u/sadGPT
19. "Enron was one of the biggest economic scams of all time."
—u/tetini8674

20. "Insulin prices in America for the last decade."
—u/SonofaJerry

Agree? Disagree? Have your own additions? See you in the comments!
Note: Some responses have been edited for length and/or clarity.