def paths_are_not_structured(paths):
    """
    returns true if the list of paths are not yet file system structured.
    i.e. if not all paths start with the root path (contribution label)
    """
    if not paths:
        return False

    root = paths[0][: paths[0].find('/', 1)]

    for path in reversed(paths):
        if not path.startswith(root):
            return True

    return False