def _get_is_direct(stmt):
    """Returns true if there is evidence that the statement is a direct
    interaction. If any of the evidences associated with the statement
    indicates a direct interatcion then we assume the interaction
    is direct. If there is no evidence for the interaction being indirect
    then we default to direct."""
    any_indirect = False
    for ev in stmt.evidence:
        if ev.epistemics.get('direct') is True:
            return True
        elif ev.epistemics.get('direct') is False:
            any_indirect = True
    if any_indirect:
        return False
    return True
