Terms of use

The material

The concepts, flashcards, articles, editorials, quiz questions, field guides and architecture deliverables on this site are written and maintained by Praveen T N. They are published for learning and are free to read, with no sign-up.

Reusing it

You may quote short passages with a link back to the page they came from, and use what you learn in your own work. Republishing whole pages, or copying the material into another site, course or product, needs written permission. Code snippets in articles may be used freely in your own projects.

Not professional advice

Architecture and engineering decisions depend on context this site cannot see. The material is general and educational; it is not a substitute for advice on your own system, and it is provided as-is, without warranty that it is complete, current or error-free. Figures, prices and product details change, and each piece carries the date it was written.

Links and news feeds

Pages link to other sites, and the AI and architecture feeds list headlines published by others. Those headlines and the articles behind them belong to their publishers. This site is not responsible for other sites' content or availability.

Using the site

Do not attempt to disrupt the site, probe its admin area, scrape it at a rate that degrades it for others, or send spam or abuse through the contact form or the chat assistant.

Privacy and advertising

What is collected when you visit, and how advertising cookies are used, is described in the privacy policy.

Changes and contact

These terms may be updated; the date at the top shows the current version. They are governed by the laws of India. Questions go through the contact form or to sigmoidptn@gmail.com.