Those questions are very thought-provoking, and here are a few more: * What if someone with access to your house/bag/coat slips in a Micro SD card with an ille

Those questions are very thought-provoking, and here are a few more: * What if someone with access to your house/bag/coat slips in a Micro SD card with an illegal file on it? * What if you download a large video file as a torrent and it contains an illegal file embedded steganographically within it? * What if your computer is storing a large, possibly random-looking, file, and someone can produce a "one time pad" which, when XORed with that file, produces an illegal file?