In Eclipse Phase, the character creation rules state that every character gets a Muse for free. Later in the book it details multiple kinds of Muses, including one called a Standard Muse.
Based on the wording in the books, I'm not clear if a starting character can select any available Muse for the free starting Muse, or if your free Muse is required to be a Standard Muse. The other kinds are fairly specialized, but might be preferable under some circumstances.
Do starting characters get to choose their Muse type, or is it always a Standard Muse?