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<p>[QUOTE=&quot;physics-fan3.14, post: 693701, member: 19165&quot;]Anything can be learned with enough practice, the right books, and a helping of patience. </p><p><br /></p><p>I would add to your list of difficult skills: AT/NT. Most people just don&#039;t understand the science of it, which means they really have no idea what they are talking about. </p><p><br /></p><p>Photography is difficult, yes. </p><p><br /></p><p>For me, one of the hardest things is determining AU versus UNC. Coins that fall on the borderline are among the hardest to grade, in my opinion. I guess this is just one aspect of grading, but I think its difficult.[/QUOTE]</p><p><br /></p>

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