Is inquiry with another student significantly more effective than inquiry while alone?

 Usually, but in time we might be able to develop our alone inquiry greatly. Inquiry with others is usually more effective, but doing it alone is ultimately what makes the difference, because we have all the time alone. To do it continually means we have to be able to do it alone. It is the sustained inquiry, whether alone or with others, that will ultimately transform our lives, not the occasional highs of inquiry we do in sessions and with others.