How is it possible that roscd can access to any package in any workspace

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In my computer I used to work with 3 different workspaces and I used to add “source current_path_workspace/devel/setup.bash” in .bashrc file to use roscd to access the packages inside the workspace where I am working

According to me I shouldn’t be able to use roscd to access packages inside other workspaces however I can do it

Someone can explain me this lucky error? I used to work in team and my work mates always receive and error when they try to use roscd to packages in other workspaces