most of these thoughts are something they just came up with, not something they have learned elsewhere.
Note that there’s some pressure on authors to make it seem like this even when it’s not. For one thing it makes them seem smarter, and for another it’s easier to make the text flow better. (Especially if the source isn’t “I learned this from this specific person and you can read their book here” but “I picked this up from various conversations with people whose names I don’t remember”.) I expect if you could see how the sausage was made it would seem less original than it does now. That’s not to accuse anyone of deliberately hiding their sources, and it’s not even necessarily a bad thing. (Note that flow is good and irrelevant info is bad.)
I think EY’s admitted that the sequences come across more original than they are, and I think Scott recently wrote a note like “the worms hypothesis from my last post is not original to me”.
Note that there’s some pressure on authors to make it seem like this even when it’s not. For one thing it makes them seem smarter, and for another it’s easier to make the text flow better. (Especially if the source isn’t “I learned this from this specific person and you can read their book here” but “I picked this up from various conversations with people whose names I don’t remember”.) I expect if you could see how the sausage was made it would seem less original than it does now. That’s not to accuse anyone of deliberately hiding their sources, and it’s not even necessarily a bad thing. (Note that flow is good and irrelevant info is bad.)
I think EY’s admitted that the sequences come across more original than they are, and I think Scott recently wrote a note like “the worms hypothesis from my last post is not original to me”.