Chess World.net: “Doubled edged sword” concept relating to Pawn structure in Chess

Kasparov on “Double edged swords”
http://books.google.co.uk/books?id=dRlW4jQ1fQEC&pg=PT69&lpg=PT69&dq=kasparov+double+edged+sword+pawn+structure&source=bl&ots=Eqc__SPLPi&sig=JrDtWkeCuoj6fiaPwsMLCpI4wuI&hl=en&sa=X&ei=XXycUdiHH86z0QXKnIDQAg&ved=0CC4Q6AEwAA

Reddit discussion relevant
http://www.reddit.com/r/chess/comments/1esg4u/currently_reading_my_system_lets_not_get_too/

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