I do not retract, I just pressed the wrong button...
But, anyway, some people have hypothesis, that Voldermort plans for Harry to rule the world (as his copy). Quirrel says something like that in parseltongue during Azkaban arch. So some believe, he is showing Harry some of the most powerful spells in this chapter on purpose. That is also consistent with what is happening.
I do not retract, I just pressed the wrong button...
But, anyway, some people have hypothesis, that Voldermort plans for Harry to rule the world (as his copy). Quirrel says something like that in parseltongue during Azkaban arch. So some believe, he is showing Harry some of the most powerful spells in this chapter on purpose. That is also consistent with what is happening.