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.

Going through the course at fifteen

This page does not explain the course again: it says in which order to go through it at fifteen, and why that order. Every step leads to a real chapter, on what already matters at that age: homework to hand in, an image going round a group, a call that imitates a familiar voice, a file uploaded without a second thought.

The order to follow the course in

  1. Words in pieces. It opens the path: it is the first step of the mechanism, before any question of trust.
  2. The next word. It comes straight afterwards because it shows how an answer is assembled, one word after another.
  3. Why it makes things up. It arrives as soon as the mechanism is in place: homework handed in is the first place where a plausible invention slips through unannounced.
  4. What you give it. It switches to the side of what you hand over: before talking about what circulates without being asked for, you need to know what you upload yourself.
  5. A fabricated image. It comes next because it is the most common case: an image going round a group, before anyone has thought of checking it.
  6. A fabricated voice. It follows the previous one: the same process applies to a voice on the phone, where trust is given even faster.
  7. Watermarks. It answers the question the two previous chapters raise: is there a mark that proves the origin?
  8. When not to use it. It closes the path with the rule that covers everything before it: asking who pays if the answer is wrong.

What already matters, at fifteen

Four of these chapters touch on situations already lived through: they deserve a word more than the sentence in the path.

Homework, and honesty

Using a model for a piece of homework is not, in itself, the question that matters. What matters is what you do with it next: an answer can invent a fact, a date or a reference with the same confidence as an accurate one, with no signal to give it away. Handing it in as it stands means handing in its mistakes too, under your own name. The chapter why it makes things up explains why that misplaced trust is no accident.

What you give away without thinking

Uploading a text or a photo to a service to get help or a retouch also means handing it to someone else. What that service then does with it depends on its own rules, rarely read before sending. The chapter what you give it separates out what really happens to uploaded content, beyond the reassuring sentence that so often sits next to the send button.

What circulates in a group

An image or a video that arrives in a messaging app, already passed on by several people, has not checked itself along the way: the number of times it has circulated says nothing about whether it is true. The chapter a fabricated image sets out the traces that fabrication leaves, and what those traces are not enough to prove.

The voice, on the phone

A recognised voice on the phone convinces faster than any other kind of proof, and that is exactly what makes it an easy target. The chapter a fabricated voice explains how a voice is rebuilt from a short sample, and the simple move that defeats the trick: hang up, then call the person back on a number you already know.

What you will be able to do afterwards

For the adult alongside

This path assumes reading on your own, at your own pace, with no marking and no account to create: it does not replace a session built for a class, and it does not say how to run one. To prepare a lesson or a talk, the page for teaching is addressed to the adult alongside.

Sources