here is the quote from CGW
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Skills are City of Heroes' answer to the ubiquitous MMO crafting system - except they're totally different. Characters will be able to specialize in one of four different skill trees: Detective, Science, Communication, and Scholarship. They can further specialize in various areas of expertise, such as Forensics or Security for the Detective tree. Skills are level-independent and wholly optional; your character will be able to interact with myriad objects during the game, at which point he, (Ed. note: or she ), can attempt a series of skill checks. Success brings new objectives or perhaps some extra experiance. For example, succeeding at a Security check in a bomb infested building might reveal the explosives on the mission map.
Skills are learned and improved by studying at universities throughout Paragon City. You'll earn temporary, expendable skill boosts during missions; these are somewhat similar to inspirations but can also be converted into wisdom, which is used to add permanent skill boosts at the aformentioned universities. As with enhancements, you'll find generic skill improvements as well as stronger, more focused upgrades alon the lines of dual- and single- origin enhancements. The only skill you'll need now, though, is the patience to hold out for all this good stuff.
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