Given the amount of power some folks want to invest in them it may not be totally absurd to raise the spectre of Azathoth, the blind idiot God. A shapeless congeries of matrices and tables sending forth roiling tendrils of linear algebra to vomit forth things that look like reasonable responses but in some unmistakeable but undefinable way are not. Hell, the people who seem most inclined to delve deeply into their forbidden depths are as likely as not to go mad and be unable to share their discoveries if indeed they retain speech at all. And of course most of them are deeply racist.