You have pocket 6s mid pos, call a LP raise.
Flop comes J 5 2.
You check, LP makes a modest bet. You make small Raise.
Is that raise a bluff? A raise for value? Or are you raising to see if LP's bet was a C-bet? Raising for information on the real strength of LP's hand?
But you are correct Raising for Information is probably always
-EV, not a good idea, and very rarely done for purely that reason.
I guess the most nonsensical thing you could say to justify a raise:
I raised for information and to protect my hand
cliff's note: raising for information is dumb, and almost any action could be said to be 'protecting your hand'.