Part of charting, Scott Carney was/is a pattern trader and was moving away from the tendency for chartist to attach specific levels for support/resistance and reversals. In other words, some flexibility. Made better sense and you should be able to find his book still, maybe even a pdf. He didn't move far enough in my opinion as he still stuck to specific fib levels whereas I believe they should be "greyed" in rather than fixed in black and white.
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