Absolutely not. But, I am really good at catching other people's plagiarism, including people who make entire livings off of such grifts. This course has a lot of obvious red flags of that, and I am curious where the original material came from in Creating a Second Brain.

This is one example of me finding some severe plagiarism where someone makes an entire living off of it: this Language Master "course" (https://www.languagementoring.com/courses/master/order/) which costs 990 EUR is basically this guide, "What do you need to know to learn a foreign language?": https://www.wgtn.ac.nz/lals/resources/paul-nations-resources...

Basically, the entire basis of her course is that above guide, but she creates video lessons for each section of the above linked guide with worksheets for each section (which you fill out to the videos). The only content that she adds that is substantiative in terms of work is language learning resources for X Y and Z languages, in terms of inputs/outputs.

Tiago Forte has been working on these ideas for many years in the open on his blog (Fortelabs, the one OP posted) and Building a Second Brain is the course he built atop that. From what I have seen of it, its original work and some synthesis of past ideas, just like most things.

It's weird to see you do these quick Google searches and speculate its plagiarized without any substance to back your argument or awareness of the work he's been doing for years now.

Funny, because the course seems to be exactly about that. In his video you linked, he quoted Picasso "Good artists copy, great artists steal".