This is an official ODERSA website.Here’s how you know

The official domain

The address of this site ends in odersa.org. Every service the association runs sits on a subdomain of odersa.org and nowhere else. If the address in your browser’s address bar does not end in odersa.org, this site is not ours.

Free, and no account

Everything is open straight away. No sign-up, no account, no password, no subscription, no advertising. Nothing is held back for those who pay, because there is nothing to pay for.

No data collected

This site does not follow you: no tracker, no tracking cookie, no measurement tool built into these pages, and nothing measured on your device. Our host counts requests in aggregate, as any server that answers does: a total, never a profile. You do not have to take our word for it: open your browser’s developer tools, go to the Network tab, and reload the page. You will see the full list of what the site asks for. Everything comes from odersa.org, nothing goes anywhere else.

Free to reuse

The content is published under the CC BY 4.0 licence. You may copy it, translate it, print it and pass it on, for your classes as much as for the people around you, on one condition only: credit ODERSA.

What we learn while writing the course

The blog

An article tells what has changed: a figure going out of date, a trap taking a new shape, a method that worked in front of a group. Every article cites its sources, like the rest of this site.

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  • No account to follow
  • Every article sourced
  • CC BY 4.0
A compartmented wooden tray filled with metal printing type sorted case by case; in the foreground, a line already set waits to be inked.
A newspaper is set letter by letter, and what is published stays: that is why a correction is written here rather than erased in silence. Willi Heidelbach, Metal movable type, 2004, photograph under the CC BY 2.5 licence, via Wikimedia Commons. This licence is not the one that covers the text of this site: the photograph keeps its own, and that is the one to credit if you reuse it.

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What gets written here

What this blog publishes

  • A figure going out of date. One of the course figures changes. The article says what changed and which page has just been corrected.
  • A trap taking a new shape. Before it enters the catalogue of traps, a new mechanism is explained here, while it is still circulating.
  • A method tested in front of a group. What actually works in a workshop or a classroom, and what that changes about the way money is taught.
  • A correction explained. An important error does not disappear in silence. The article says what was written, what is correct, and since when.
An article that cannot cite its source is not published here.

What does not get published here

What this blog does not do

  • No personal advice. An article explains a general mechanism, never what to do in a specific situation.
  • No brands. No bank, no insurer, no platform, whatever its status.
  • No promised return presented as a fact. A figure for a gain stays an example or a warning, never a forecast.
  • No chronological log. What enters the service is dated line by line, an article, a trap or a calculator, on What’s new. Here, an article develops an idea; there, a line dates a fact.

No account, no mailing list

Following this blog without leaving an address

No newsletter, no form, no address to leave: that would be data collected, and this site collects none. The blog feed lists the published articles, in a format read by a feed reader or by a browser that recognises it. It is rebuilt at every release of the site, from the articles themselves: nobody maintains it by hand.

The feed is at /en/feed.xml. A feed reader recognises it directly. Opened in an ordinary browser, that address shows plain text: that is normal, not an error.

Editorial line up to date as of .

The detail of every figure is on The sources. How the course is written and checked is on Our method. What has just entered the service is dated on What’s new.