 Therefore, it is not possible to produce a lossless algorithm that reduces the size of every possible input sequence.Most everyday files are relatively 'sparse' in an information entropy sense, and thus, most lossless algorithms a layperson is likely to apply on regular files compress them relatively well.This may, through misapplication of intuition, lead some individuals to conclude that a well-designed compression algorithm can compress "any" input, thus, constituting a "magic compression algorithm".