Normal applications do not completely replace themselves every time they are run. I hope you can see the difference. It's easy to see that the files in an actua

Normal applications do not completely replace themselves every time they are run. I hope you can see the difference. It's easy to see that the files in an actual application running on your OS don't change. It's much harder when there are no files and everything is downloaded anew every time you start the application. Totally different than "automatic updates" of actual applications.