So much so, in fact, that the owners of the Michel Thomas IP tried to sue him for stealing the methodology. The EFF, back when they actually did anything, shredded them.
https://arstechnica.com/tech-policy/2018/07/no-you-cant-pate...
Please check Language Transfer out and support him how you can.
Now I am learning Swedish. It has been taking me _way_ too long and unfortunately LT doesn't have a Swedish course. Looking at one of these documentaries about Michel Thomas it does indeed look like exactly that kind of approach! And I see he has a Swedish course. I'm excited to give it a try!
Amazing
They seem so perfectly weighted and with exactly the right increase in difficulty that I assumed they must have been heavily edited / selected.
But basically he kept his methodology secret - literally locked in a safe - because he didn’t trust anyone after his experience in ww2.
It wasn’t until he was really old that someone convinced him to make the recordings. And the tapes are just that.