It seems we misunderstood each other on what "item build" is. I was referring to
guides in which you just get set of items to build on a champion in certain order (though there are guides which offer some options but these are rather rare) and I have a bad habit of taking "mental shortcuts" ... damn its hard to go into complex stuff when you are not native speaker
, well lets say I thought about something but in the end I didn't write it properly so all that was left was something ambiguous that seems fine to me since I know what I'm talking about and that's because I was too absorbed in thinking about subject or something like that >_>, I do that often, I also space out often, do I sound weird?
Well let me clear it up a bit.
At first sticking to good build may be good but this isn't really effective in longer run. Instead you should learn what items are effective on your champion and then buy what you need at the moment
Translation from me to English:
If you want to become good player you need to be flexible and adapt to your enemies meaning "longer run" doesn't apply to single match.
Well that's pretty much what I meant with addition (that seemed obvious to me so I didn't wrote it) that you need to be smart about it and not just rush expensive magic resistance item because enemy team has mages instead of getting some basic items that make your champion work at all since these are items you
need at start of game.
Anyway I wasn't exactly clear myself so that's probably what caused all this confusion. Sorry
.