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4. You need full access to the source code
Although this issue is generally not of interest to the average user, I bring it up here because it remains a significant misconception about open source. Open source does mean you have full access to the source code of a program but it doesn't mean you need that access to use the software.
This is a myth that has persisted for a long time. Just because the source is out there and available doesn't mean it's necessary. In fact, users can go their entire life using open-source software and without ever having to touch the source. But should you or your company want to modify an application, the code is there when you need it.
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