there’s a serious offense. It may happen that newly-arrived monks hear signs and indications of resident monks: the sound of the feet of someone doing walking meditation, the sound of recitation, the sound of coughing, the sound of sneezing. As a consequence, they’re unsure whether or not there are resident monks there. Then— If they do the observance-day ceremony without investigating, there’s an offense of wrong conduct. If they investigate, but don’t see anyone, and then do the observance-day ceremony, there’s no offense. If they investigate, and they see someone, and then do the observance-day ceremony together, there’s no offense. If they investigate, and they see someone, but then do the observance-day ceremony separately, there’s an offense of wrong conduct. If they investigate, and they see someone, but think, ‘May they get lost! May they disappear! We are better off without them,’ and then do the observance-day ceremony aiming at schism, there’s a serious offense. It may happen that resident monks see signs and indications of newly-arrived monks: an unknown almsbowl, an unknown robe, an unknown sitting mat, water poured on the ground from the washing of feet. As a consequence, they’re unsure whether or not monks have arrived. Then—