Let me know what you think...

PALPATINE: I thought not. It's not a story the Jedi would tell you. It's a Sith legend. Darth Plagueis was a Dark Lord of the Sith, so powerful and so wise he could use the Force to influence the midi-chlorians to create life ... He had such a knowledge of the dark side that he could even keep the ones he cared about from dying.

ANAKIN: He could actually save people from death?

PALPATINE: The dark side of the Force is a pathway to many abilities some consider to be unnatural.

ANAKIN: What happened to him?

PALPATINE: He became so powerful . . . the only thing he was afraid of was losing his power, which eventually, of course, he did. Unfortunately, he taught his apprentice everything he knew, then his apprentice killed him in his sleep. (smiles) Plagueis never saw it coming. It's ironic he could save others from death, but not himself.

ANAKIN: Is it possible to learn this power?

PALPATINE: Not from a Jedi. Now, from A New Hope:
VADER: He is here...

TARKIN: Obi-Wan Kenobi! What makes you think so?

VADER: A tremor in the Force. The last time I felt it was in the presence of my old master.

TARKIN: Surely he must be dead by now.

VADER: Don't underestimate the power of the Force.

Now, maybe its just me, but does that sound like Vader is implying Obi-Wan Kenobi could extend his life by using the Force? But we just read the extending one's life with the Force is a Dark Side thing??