I still don ' t get what the dark net has to do with that . I mean the only difference between the dark net and the rest of the internet is that you can ' t just click one link after another to eventually get there . Technically any internal company web sites using the internet to be accessible globally is part of the dark net as well . So what kind of technology can you play around with there that you couldn ' t play around it on the normal net ? <| sep |> I remember when my neighbors taught me spells in a house like that <| sep |> It ' s like a bad Vine ! <| sep |> Your direction is actually endstart , or xa , yb , zc . It ' s a vector . And you want the dot product between that direction and your other direction end 2 start