I am so-so-so sorry if this theory has already been posted somewhere in this thread or in the old one, but I didn't feel like going through all the pages.
Firstly, I think we should, just like louise said, look at this part:
QUOTE
. . . at the time of James' death.
But in a different way.
What if Dumbledore himself was under it when the Potters we're killed??? Now, the most likely response to this is: why would he, he can make himself invisible without that you stupid noob!
The answer is simple: Dumbledore didn't use his way because that was the first way Voldemort would look for. Dumbledore didn't want to be caught by Voldemort. Voldemort would suspect Dumbledore to be there to try and save Them, so ofcourse he searched fur somebody being hidden under a spell. Then, once he found no-one, he proceded to kill the potters. The next flaw in my theory is: why didn't he stop voldemort killing Lily and James? Because obviously he could have done that! The answer is simple: He wanted the prophecy to be fulfilled. If the prophecy wasn't fullfilled, it would only take longer to "Vanquish The Dark Lord". Also, there is another reason Why Dumbledore was there:
Before I explain this part of my theory, I am going to need to quote something from another book I have read, namely 'Northern Lights' by Philip Pullman. In the scene a incredibly smart man is trying to create a bridge to another realm, but he explains it like this to a child who is interested (summarized):
QUOTE
Your mother has also been conducting experiments with cutting away deamons. What she didn't relize is that an unbelivablie powerful burst of enrgy comes out when you cut away a deamon. she merely thought it was shock, but I was smarter. What if we harnassed that enrgy into a bridge. It would need a phenomonal burst of energy, but I can do it.
Wouldn't sacrifising yourself for you son, which is exactly what Lily did, be that "phenomonal" burst of energy? Somebody had to harnass it into Harry's protection, which is where Dumbledore comes into play. He had told the potters that their son was either going to die or going to kill Vodlemort, and that they we're probably going to be killed too. Then he told Lily she had to sacrifise herself, and James that he had to give him [DD] his cloak. james demanded that he give the cloakto Harry when he was dead, and DD agreed.
So what happened: Voldy kills James, Lily Sacrifises herself, DD harnasses pwer into protection, avada kewaffles backfires, Prophecy has been triggered.