I believe that we don’t need different kinds of uncertainty to have a shorthand. I would just go with a single number, along with some code telling you that this is a certainty measurement. Also, it should probably be something long enough to be searchable. It should be something we put on the wiki, and that can be searched just from seeing it in practice, and then some of us could use it and some of us could choose not to use it.
I believe that we don’t need different kinds of uncertainty to have a shorthand. I would just go with a single number, along with some code telling you that this is a certainty measurement. Also, it should probably be something long enough to be searchable. It should be something we put on the wiki, and that can be searched just from seeing it in practice, and then some of us could use it and some of us could choose not to use it.