Watched ROTJ last night(love it ) and when Luke says "You cant die", Yoda replies with "Strong am I with the force but not that strong". So, he knows of the life saving power that Palpatine speaks of in ROTS? Is it available to Jedis that pursue it? I know that Palps says to Anakin that the dark side is a pathway to many powers the Jedi wouldnt agree with or whatever. The fact that he said what he did at least made me wonder. Yoda says he isnt strong enough with the force but maybe he leaves the door open that Luke one day could be. I dunno, just thinking here.