https://www.ervads.com/ https://www.ervads.com/courses https://www.ervads.com/tracks https://www.ervads.com/blog https://www.ervads.com/consultation https://www.ervads.com/useful-links https://www.ervads.com/blog/practical-usefulness-of-llms-part-1 2026-09-21 https://www.ervads.com/blog/practical-usefulness-of-llms-part-2 2026-09-21 https://www.ervads.com/blog/practical-usefulness-of-llms-part-3 2026-09-21 https://www.ervads.com/blog/cognitive-primacy-of-language 2026-09-21