📝Postel’s Law

Be liberal in what you accept, and conservative in what you send. —Jon Postel


  • This seems to work better if there multiple co-existing implementations (internet protocols when Postel’s law was formulated). However, if there is one dominant implementation, other code may rely on its particular unspecified behavior which hinders backward compatibility (Being liberal in accepted input hinders backward compatibility).



Want to receive my 🖋 posts as I publish them?