so what? fill in a 20gb file with zeros or f.i. in this case, the actual content of this 40kb file over and over, zip it, and you will get the same result on un

so what? fill in a 20gb file with zeros or f.i. in this case, the actual content of this 40kb file over and over, zip it, and you will get the same result on unzip. DEFLATE is a way improved run-length encoding. Nothing productive though here... :)