Well...if you could see the effect of it in such a way,but the target of the spell is you. For example, if an epic spellcasters decided to somehow smite you with an amazing spell from 3 planes away forsight would still work...thus its effect does encompass anyone that harbors an intent to harm you and attacks you. There is nothing to preclude that it won't work against inter-plane attacks...thus it does encompass the whole universe yes...

And no the target reading for forsight is you...i did mention it in my previous post.

[quote]The spell itself is targeted at you[/unquote]

I did not talk about where the spell is targeted but to whom the effect of the spell is targeted, that is anyone attacking you.