The computer is an invaluably remorseless master: harsh, sometimes to the point of causing you to tear your hair out, but never unfair.

计算机可以说是一位铁面无情的大师：严酷，有时甚至会让你抓狂，但绝对公平。

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And perhaps most invaluably, Weamer prints extensive interviews with Upper Delaware guides, where they dish on their preferred flies, techniques and methods.

FORBES: Catskills Fly Fishing Book