def convert_taxonomy_bool(s):
    """ 
    Returns true/false given a string loaded from the Taxonomy.  Values to check are based on
    observed values from within the Taxonomy.  If the input is not valid this will always return
    false.
    """

    if s is None:
        return False
    elif s.strip().lower() in ["true", "1"]:
        return True
    else:
        return False