[cjk73]

I think the reply about not worrying has a lot to do with the concept of "know thy competition". In NL10 you will encounter less blind steals on average then say at NL100. This means that appearent steals will turn out to be legitimate hands a greater % of the time thus potentially making blind defense -ev. Of course if you have a solid read that THIS opponent is stealing (need some evidence) then it is just as important, imo.