Here is analogy of what happens with Deleting in Windows: once libraries used library cards to locate books, so tearing up a card in a sense did delete the book, but obviously until the book was physically removed, the book remained on the library shelf

With a delete in Windows: the “library card” is torn up, but the book remains, as any criminal soon discovers after the law confiscates his computer and finds remaining incriminating documents thought deleted


Too, this is why documents can be brought back if a deletion error is caught in time before Windows writes over the documents still on the “shelf” -- removing the "book," but in parts, because the document may be spread all about the hard drive


The only true way really to Delete is download a third party program to do this short of taking your hard drive out, running your vehicle over the drive, and then melting the particles of the drive, but depending upon the crime, this may NOT even be enough if the law is after you and money is no object