DigitableCourses
Local and account-free. No account, no sign-up: whatever you type into the tools stays in this browser's localStorage and never reaches a server.
Our own counter records page opens and finishes: the address leaves, plus one tenth-of-the-text figure. No cookies, no outside trackers, your IP is not stored, Do Not Track is honoured. How to check that
The portal's own repository is not published, so we do not call it open source. What is open:
The portal lives on donations, paid consultations and requested write-ups, and on Workbench sales.
There are no plans to make the courses paid.
Deployment of 16 September 2026, snapshot 95043e5
What has changed on the portal since your last visit. The full list of deployments is in the “What has changed” section on the About page.
2 articles on this topic.
Invalid patterns detected regardless of the topic: affirming the consequent, denying the antecedent, false disjunction, quantifier shift, existential and modal leap.
How statements are built from concepts: A/E/I/O, quality and quantity, distribution, square of opposition, transformations, quantifiers, and the scope of negation.
Nothing matched that query.