"What exactly does this magic do?
What aspects does it strengthen us in?" Krum hesitated, then asked anyway.
Clearly, he was tempted.
"Mainly two aspects. First, it can help young wizards under seventeen break free of their limitations and return to their original level."
"Wait, Professor, you said limitations?
Could young wizards actually be stronger than adults?
But doesn't magical power slowly increase with age?" Harry questioned.
Dumbledore smiled slightly. "Reality often defies common sense.
In fact, the infancy stage, when the mind is still chaotic, may be when most wizards are at their strongest.
Magic is like their limbs, an instinctive part of their existence.
If nothing unexpected happens, this state would continue even as they gradually gain Wisdom."
Harry asked curiously, "What sort of unexpected event?"
"It has to do with the Affection Power we were discussing.
Those wizards I just mentioned may be powerful.
But think about it. When they are still infants and possess such immense power, it is dangerous to their surroundings and their parents—especially if their parents are Muggles.
Then, a force even stronger than the Affection Power you just heard about descends upon young wizards. It belongs to the subconsciousness of all wizards, and I call it collective ideology.
It may also be combined with the common perception most living beings have of infants—that they are weak.
The result is that young wizards are subject to an invisible restraint before reaching adulthood.
A restraint that even you yourselves cannot perceive.
Adult wizards and young wizards.
If they possess the same magical power and magical attainments,
the magic cast by an underage wizard will always be weaker than that cast by an adult wizard.
Only upon adulthood will this restraint vanish.
That is also why most students find that their magic improves as swiftly