Magic is tough to master, and mind-melding is one of the more difficult things Hogwarts students can learn. Basically, students have to try to learn to read and get in their heads.
Voldemort was actually excellent at this and he was able to manipulate Harry Potter. Potter wound up having to do some training sessions with Professor Snape to shield his mind.
As it turns out, even Slytherins who can't read your mind can prevent you from entering theirs at will. Something about being that house and its mystery, or the cunning they already show, seems to make them great this.
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Why is Slytherin the best house in Hogwarts
FanfictionSlytherin... Go online try to find some articles out there that claim to show why Slytherin is the best house. You won't be able to find many that are good. You can see they aren't very deep and don't have very genuine reasons. Some of are even bias...