these people tend to get very obsessive with certain subject

that is why they can get really good in particular area.

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• I would not use the word"obsessive" rather use highly focused in -Bambooseven- ♀ (233 bytes) () 04/27/2011 postreply 13:40:10

• after seeing the list you provided, -howcan^- ♀ (53 bytes) () 04/27/2011 postreply 14:41:13