Genta nodded and added: "Yes, you need to prove that dark and light magic are like yin and yang. One cannot live without the other, because if your society removes dark magic from your world, then, light magic will begin to fade away. The reason is that the light cannot live without the dark and the dark cannot live without the light. The only fields of magic that you have to ban, is black and white magic. Black magic is corrupting a witch or a wizard and makes them insane. White magic makes you delusional and is blending you, what is right and what is wrong. Both types of magic require human sacrifices and due to the brutality, those fields of magic should be removed from your society. The other thing that you have to remove is this ban, because the population of Great Britain would be shrinking and the next generations of witches and wizards are going to grow weaker and weaker until they become squibs and magic will soon enough fade away and become only a legend in Britain."