STEM与日常科技·英语30篇（2）
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Open Source Software and the Role of Licenses
开源软件与许可证的作用
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Open source software shares human-readable code publicly so anyone can study, modify, or distribute it freely.
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Licenses like MIT, GPL, and Apache define exactly what users may or may not do with that code.
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The MIT license allows commercial use, modification, and sublicensing with minimal restrictions.
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GPL requires derivative works to remain open source, ensuring shared improvements stay public forever.
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Apache adds explicit patent grants, protecting contributors and users from legal claims over embedded inventions.
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Without licenses, all code defaults to full copyright—meaning no reuse is legally permitted at all.
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Developers choose licenses based on whether they prioritize freedom, collaboration, or control over downstream use.
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License compatibility matters: mixing incompatible ones can block legal integration in larger projects.
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Companies audit open source licenses before deployment to avoid compliance risks or forced disclosures.
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Understanding these rules helps everyone contribute ethically while building secure, scalable tech systems.