Why this is free
A fact should not have a lock on it.
You can read every card on Curio. You do not take a quiz, you do not start a trial, and you do not pay to turn the page. A fact does not become more true when a lock is put on it. It becomes lonelier.
Education is a strange good. The person who teaches it still has it. A book is not used up because someone else understood the page. Charging at the door teaches the wrong lesson: that knowing is a product to be metered, and that a person who cannot pay should stay outside. Curio is a shelf, not a turnstile. Posting is free too. The only thing a card has to be is short, sourced, and actually about something.
The shelf still costs work. Someone writes the Library. Someone sweeps out spam, copies, and cruelty. That work is paid by people who choose to support it, and by a company only when that company has bought a labeled ad. If nobody has bought one, you will not see a hole where an ad would have been. The feed is just the cards.
The night the promise changed
On 15 August 1971, the United States stopped promising that a dollar could be turned in for a weight of gold. Before that night, the dollar was tied, at least on paper, to something you could audit. After that night, the dollar was a promise from an institution, and the institution could issue more promises when the old ones felt heavy.
That is what fiat money is. Not a ghost story. A design. The note in a drawer is worth whatever the issuer says it is worth this year. If more notes are made, each one buys a little less, and nobody comes to your kitchen to ask. You notice it later, as prices.
Call a money closer to perfect when nobody can dilute it in the dark. A weight of metal was the old attempt. A proof-of-work coin with a public schedule is a newer one: you can read the supply, and changing it is not a quiet meeting. Perfect, here, does not mean magical. It means the rules are on the table.
Why the herd stays
Here is the part that should bother a careful person. Sound money exists. People still hold the kind that melts. Not always because they ran the numbers. Because the shop prices in it, the tax office counts in it, and the person next to them is holding the same notes.
Solomon Asch sat people in a room and had the group call a short line a long one. Most of them, at least once, agreed with the room against their own eyes. Money is that room, stretched over a whole country. A herd feels like safety. The old word is sheep. It is not a compliment, and it is not only about other people. It is the habit of copying the money everyone else copies, and then calling the habit common sense.
What a tip is
Curio does not take cards, bank transfers, or an in-app balance. Those are fiat rails. A library that is serious about clear thinking is not going to fund itself with the kind of money the shelf is warning you about.
A tip is a Kaspa transaction from your wallet to the author's Kaspa address. One output. The whole amount. We never hold it, we never forward it, and we cannot take it back. Kaspa cannot charge you next month. If you want to support the library itself, you send a payment yourself, to a public treasury address, and the site marks a window of time in which you see no ads. That money is for editors and for keeping spam off the shelf. When the window ends, nothing is pulled from you. You decide again.
That is the whole rail. Free to read. Free to post. Kaspa if you want to thank someone, or if you want the shelf kept.
Sources for the claims above: Federal Reserve History on the end of gold convertibility (15 August 1971); Encyclopaedia Britannica on Gresham's law; Solomon Asch's conformity studies, 1951. The judgment about herds is ours. The dates are not.
Support the shelf
These amounts are optional. They do not unlock cards. They mark you as a supporter and hide ads for the window. 10, 25, or 100 KAS lasts 32 days. 51 KAS lasts 183 days. 96 KAS lasts 366 days. Kaspa cannot charge you again.
Treasury, public, so you can check it:
kaspa:qqastzhqp7d5r9z75zf2f3gv0p0epxy5qa90jn4lnhl6vk86gq63yx5ycfm74