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I know of the operations of this network because I have studied it for twenty years and was permitted for two years, in the early 1960's, to examine its papers and secret records. I have no aversion to it or to most of its aims and have, for much of my life, been close to it and to Trading Trader  many of its instruments... my chief difference of opinion is that it wishes to remain unknown, and I believe its role in history is significant enough to be known... because the American branch of this organization (sometimes called the "Eastern Establishment") has played a very significant role in the history of the United States in the last generation."

Remember the days of the 1.44 MB floppy disk? Back then the thought of runaway duplicate file creation seemed almost laughable since the limited storage space was a natural deterrent to wasting it. We couldn't imagine the cavernous storage options that would evolve over the next 30 years, inviting thoughtless duplication of files under a multitude of scenarios. How many times have you copied your friends music collections, or their movie collections, pictures, or downloaded torrents, or copied a folder somewhere else and forgot about it? (disclaimer: do not perform any illegal copying or some very rich people might not get all the money they deserve). This can't help but lead to rampant duplication of your files and surprisingly, that large hard drive no longer seems so cavernous...

https://www.linkedin.com/pulse/trading-trader-review-pravin-kumar

You're first reaction to this might be: I can use a simple file search utility to locate all copies of a file named 'hello.mp3'. While true, how would you know which files have duplicates? Would you perform this search a million times if you had a million files? This also assumes that all your duplicates are named 'hello.mp3', which is rarely the case because you may have pulled this file from other people that exercise different naming conventions (e.g. 'hello-2011.mp3').Another issue is that some files can be considered the same, even though their filename and even their contents are different when examined on a byte-by-byte level. Maybe you have two files, 'hello.mp3', and 'hello.ac3'. Both are the same song, but are entirely different in terms of the data.Even worse is when the filename is completely irrelevant to the contents. For example, one might rip their CDs to their hard drive and end up with a correct MP3 header tag, but the file name might end up like 'Track 1.mp3'. There are going to be a lot of Track 1's if you rip all your CDs this way.

For number 1) It is fairly easy to determine an exact match (files have exactly the same binary data) and if you are only looking for exact matches, the first byte mismatch will end the comparison. For the most part, exact matches are exceedingly rare so it takes but a few bytes to discount a potential match, making this type of match comparison very quick. However, a proximity match between file contents becomes a much more tedious and complex operation that demands all considered files to be fully read, which requires an exponentiating comparison algorithm that quickly becomes insurmountable with only a few thousand files. Simply not an option.

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