From Snape’s POV, Harry’s camp is Dumbledore’s camp—to be around Harry he’d have to keep on being a Professor at Hogwarts, and Dumbledore will make sure he’s his piece if he’s on his home turf. Harry won’t have his own proper camp for years yet, not something he could defend against Voldermort-level opponents by his and his allies’ own magic power.
There’s another reason: (edit: as far as Snape knows...) Harry doesn’t know Snape was a Death Eater, a double agent, and the one responsible for delivering the prophecy to Voldemort! If Snape moves openly to support Harry where this doesn’t mean supporting Dumbledore, then Dumbledore will warn Harry against him by revealing Snape’s past, and Harry won’t ever trust Snape after that. The impression Snape created in his last private conversation with Harry was bad enough.
Even if Snape merely tries to approach Harry privately, Harry will want to ask him questions about the last war. How did his parents die? What does the prophecy say? How did Dumbledore manage the last war? He’ll be asking because Snape was there, but true answers will cast Snape in a very bad light.
Harry doesn’t know Snape was a Death Eater, a double agent, and the one responsible for delivering the prophecy to Voldemort!
Harry figured this out at the bottom of chapter 46, Aftermath Minerva McGonagall. Three people know. Dumbledore had to not learn first, because then he would only tell the one person who would set the trap (Snape) and only two people would know of the prophecy instead of three. So Harry correctly deduces that McGonagall learned first and told Dumbledore who told Snape who told the dark lord.
Whether or not Snape knows that Harry knows, we can’t be sure. However, he does know that Harry knows who knows the prophecy. Given just this information he is aware that Harry could deduce that Snape was the mole who helped trap Voldemort. If it seems a little farfetched for everyone to be so smart, I will note that Slytherin House practically recreated the entire scenario, minus the exact specific details, of Harry’s blackmail of Snape after one day. Snape would be used to this level of deduction and plotting in his students.
Actually, I think the Slytherin students reasoned rationally yet happened not to get the right answer.
Slytherin thinks that Snape can get away with being horrible because he’s blackmailing Dumbledore, that Harry found out how Snape is blackmailing D, and that D now has to try to please both of them.
In actuality, Snape is horrible at Dumbledore’s direction, in order that everyone think Snape is blackmailing him, when actually Snape is really on Dumbledore’s side (chapter 77). (Or at least D thinks so, based on love-for-Lily.) But Dumbledore really does have to keep Harry happy to some extent, so he directs Snape to be horrible to only half the students. Then D can maintain the fiction that Snape is blackmailing him, and can pretend that Harry is now blackmailing him too by finding out the same secret Snape has.
D plays along with Harry’s guess that he wants an evil potions master, so that he doesn’t have to tell Harry that Snape is secretly on his side.
Although Harry was a little wrong; Snape overheard the prophecy, he wasn’t given it by Dumbledore. I don’t even know if he was a double agent at that point, or just a simple agent for Voldermort in Dumbledore’s camp. He only really went over to Dumbledore’s camp because 1) Lily was killed and 2) Voldermort died.
Whether or not Snape knows that Harry knows, we can’t be sure. However, he does know that Harry knows who knows the prophecy.
There are other explanations that Snape might present for that. For instance, he might claim to Harry that Voldemort told all his top lieutenants about the prophecy before attacking the Potters. The major danger to Snape is a reveal from Dumbledore.
Sure, on the gross level it’s just swapping out “tied to Dumbledore’s faction because that’s where he can watch over his lost love’s son” to “tied to Dumbledore’s faction because that’s where he can watch over someone who might be in his own long-term rational self-interest to support.”
From Snape’s POV, Harry’s camp is Dumbledore’s camp—to be around Harry he’d have to keep on being a Professor at Hogwarts, and Dumbledore will make sure he’s his piece if he’s on his home turf. Harry won’t have his own proper camp for years yet, not something he could defend against Voldermort-level opponents by his and his allies’ own magic power.
There’s another reason: (edit: as far as Snape knows...) Harry doesn’t know Snape was a Death Eater, a double agent, and the one responsible for delivering the prophecy to Voldemort! If Snape moves openly to support Harry where this doesn’t mean supporting Dumbledore, then Dumbledore will warn Harry against him by revealing Snape’s past, and Harry won’t ever trust Snape after that. The impression Snape created in his last private conversation with Harry was bad enough.
Even if Snape merely tries to approach Harry privately, Harry will want to ask him questions about the last war. How did his parents die? What does the prophecy say? How did Dumbledore manage the last war? He’ll be asking because Snape was there, but true answers will cast Snape in a very bad light.
Harry figured this out at the bottom of chapter 46, Aftermath Minerva McGonagall. Three people know. Dumbledore had to not learn first, because then he would only tell the one person who would set the trap (Snape) and only two people would know of the prophecy instead of three. So Harry correctly deduces that McGonagall learned first and told Dumbledore who told Snape who told the dark lord.
Whether or not Snape knows that Harry knows, we can’t be sure. However, he does know that Harry knows who knows the prophecy. Given just this information he is aware that Harry could deduce that Snape was the mole who helped trap Voldemort. If it seems a little farfetched for everyone to be so smart, I will note that Slytherin House practically recreated the entire scenario, minus the exact specific details, of Harry’s blackmail of Snape after one day. Snape would be used to this level of deduction and plotting in his students.
Actually, I think the Slytherin students reasoned rationally yet happened not to get the right answer.
Slytherin thinks that Snape can get away with being horrible because he’s blackmailing Dumbledore, that Harry found out how Snape is blackmailing D, and that D now has to try to please both of them.
In actuality, Snape is horrible at Dumbledore’s direction, in order that everyone think Snape is blackmailing him, when actually Snape is really on Dumbledore’s side (chapter 77). (Or at least D thinks so, based on love-for-Lily.) But Dumbledore really does have to keep Harry happy to some extent, so he directs Snape to be horrible to only half the students. Then D can maintain the fiction that Snape is blackmailing him, and can pretend that Harry is now blackmailing him too by finding out the same secret Snape has.
D plays along with Harry’s guess that he wants an evil potions master, so that he doesn’t have to tell Harry that Snape is secretly on his side.
Good catch.
Although Harry was a little wrong; Snape overheard the prophecy, he wasn’t given it by Dumbledore. I don’t even know if he was a double agent at that point, or just a simple agent for Voldermort in Dumbledore’s camp. He only really went over to Dumbledore’s camp because 1) Lily was killed and 2) Voldermort died.
There are other explanations that Snape might present for that. For instance, he might claim to Harry that Voldemort told all his top lieutenants about the prophecy before attacking the Potters. The major danger to Snape is a reveal from Dumbledore.
Sure, on the gross level it’s just swapping out “tied to Dumbledore’s faction because that’s where he can watch over his lost love’s son” to “tied to Dumbledore’s faction because that’s where he can watch over someone who might be in his own long-term rational self-interest to support.”
Or more explicitly “tied to Dumbledore’s faction because that’s the faction that won’t be evil to him, and being without a faction is too dangerous”.