> When the number of blue-eyed people is 1, the blue-eyed person did not know there were any blue-eyed people in the tribe. Knowledge is added by the statement.

Wouldn't the blue-eyed person think either:

a) The visitor is lying, and wonder why everyone else doesn't think they are blue-eyed, thus committing suicide?

b) Since they know no one else is blue-eyed, deduce that they are the sole blue-eyed person and commit suicide?

> When the number of blue-eyed people is 2, the blue-eyed people knew that there was a blue-eyed person but did not know that the blue-eyed person knew that the tribe had any blue-eyed people. Knowledge is added by the statement.

Wouldn't these two people wonder why the other blue-eyed person isn't committing suicide, and deduce that they too must also be blue-eyed?