"So what does Mephisto do?" I ask.
"He makes everybody forget Peter's Spider-Man."
"Uh, huh. So Aunt May's still in the hospital --"
"No, he saves Aunt May."
"But if all he does is save her life and make everybody forget he's Spidey, she still has a scar on her midsection."
"No, he makes that go away too."
"Okay...:
"Then he wakes up in her house."
"The house that was burned down?"
"Right."
"But how --"
"Mephisto undoes that as well."
"Okay. And the guys who shot at Peter and May and were killed, they're alive too? Mephisto can bring guys back from the dead?"
"It's all part of the spell."
"And Doc Strange can't tell?"
"No,"
"And the newspaper articles? News footage?"
"Joe, it's been forgotten."
"I'm just asking is that stuff there or not there?"
"Not there. And Peter's web shooters are back."
"Is this the same spell or a different spell?"
"Same spell."
"How does making people forget he's Spidey bring back his web shooters?"
"It's magic, okay?"
"I see. And Harry's back."
"Right."
"And Mephisto does this too."
"Yep."
"So is Harry back from the dead, or has he been alive? If they ask him, hey Harry, what did you do last summer, will he remember? And the year before? And the year before? If he says they all went on a picnic two years ago, will they remember it?"
"It's --"
"Because if he now has a life he remembers, if he's not back from the dead, then you've changed the continuity you said you didn't want to change. Those are your only options: he was brought back from the dead, and there's a grave, and people remember him dying --"
"Mephisto changes THEIR memories too."
"-- or he's effectively been alive as far as our characters know, so he's been alive all along, so either way as far as our characters are concerned, continuity's been violated going back to 1971.
How do you explain that?"
"It's magic, we don't have to explain it."