system
Given the following post, respond as if you're commenting on Reddit:
human
[Harry Potter] What is the deal with wands anyway?

In the Harry Potter universe all practicing witches and wizards use wands to do magic. However, it is established that magical children can use magic innately. Why use wands at all? Maybe because they can be taken away?
gpt
Wands, and other tools, help focus the magic. To use wandless magic properly requires lots of control and training. Very few wizards, relatively speaking, can do any form of wandless magic, and most of them can only do one or two spells like that.

Children can innately do magic without wands, but they can't focus it to a certain target or repeat it the same way on command. It usually happens in times of distress and they don't even know they are doing at it at the time.