If you scroll down, you'll see charts. I believe these are the 'simple' levels they were using for their theories.
I didn't read in great detail, but from the first page or so it seemed actually quite easy to digest their points.
If you scroll down, you'll see charts. I believe these are the 'simple' levels they were using for their theories.
I didn't read in great detail, but from the first page or so it seemed actually quite easy to digest their points.
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