Regardless, statements such as those in "Witchcraft Repackaged" that the books depict actual occultist practices of any kind have been roundly criticised. Christian writer Stephen D. Greydanus writes that the magic of the "Harry Potter" novels is not the ritualistic, invocative magic of Wicca or occultism but the same "fantasy" magic practised in the works of J. R. R. Tolkien and C. S. Lewis; "If anything, the magic in Rowling's world is even more emphatically imaginary, even further removed from real-world practices, than that of Tolkien or Lewis; and, like theirs, presents no appreciable risk of direct imitative behaviour." "Christianity Today" columnist Charles Colson asserts that the magic in "Harry Potter" is "purely mechanical, as opposed to occultic. That is, Harry and his friends cast spells, read crystal balls, and turn themselves into animals—but they don't make contact with a supernatural world. not the kind of real-life witchcraft the Bible condemns." Austin Cline notes that, "The Harry Potter books simply aren't about Wicca as it is currently practiced. J.K. Rowling researched Wiccan practices and incorporated a few elements in order to give her books a bit more of an air of reality, but she and Wicca are drawing upon the same corpus of ancient traditions and stories so similarities are inevitable. They certainly aren't a sign that the books work to "indoctrinate" people into Wicca as a religion."