" Changes ? " " We ... the people in the dream , " the monk said falteringly , " they 're us , but not ... they 're different ... and then something changes , and they are us . " Hakkai stared mystified at his companion once he had finished his labored statement . " What ? "

Why would the monk be faltering as he describes what he saw in his dream ?
The monk is confused and disturbed by what he saw