So, I wonder if really EVERYONE EVER quit talking to them.  Even Fred and George?  It doesn’t seem like them, but then, they’re not so close with Harry and Ron as they become.  They’re much older and Ron and Harry are still ickle first-years.  Hm.

Oh I wonder about the sparks from the wand- can a wizard just make their wands shoot whatever color sparks they like?  Because I can’t imagine NOT spending, like, four hours doing just that.  “Now, purple. Now green. Now TEAL.”

One of the strong themes in the series is setting someone up to be the obvious badguy and then pulling the rug out from under you.  We also start immediately dealing with the non black/white nature of some character.  Snape doesn’t hate Harry any less by the end of the book, even when it’s revealed he was trying to save Harry’s life as well as keep the stone safe.

Oh there’s a bit of foreshadowing to the next book, too.  “They don’t know we’re not allowed to use magic at home. I’m going to have a lot of fun with Dudley this summer…”

He doesn’t consider what might happen if they find out.  Not that he was planning on using magic, but he is capable of snapping and using it without meaning to.  Especially living with the Dursley’s.  Harry occasionally suffers from a lack of foresight.