Green Eyes

Each green eyed person can see that everyone else has green eyes, so that much is [already] known by each person. But what each person doesn't know is the color of their own eyes.

( Is the answer to this statement yes, no, or irrelevant? )

Originally posted by lemon lime
Each green eyed person can see that everyone else has green eyes, so that much is [already] known by each person. But what each person doesn't know is the color of their own eyes.

( Is the answer to this statement yes, no, or irrelevant? )

Originally posted by BongalloJoe
yep.

Originally posted by HandyAndy
Let's review the possibilities:

1. Telling them "Everyone has green eyes" is disallowed because it's not something they already know.

2. Telling them "Everyone [b]you meet has green eyes" is allowed, but it leaves the observer in the dark about his/her eye color.

3. Telling them "One or more of you has green eyes" obeys the rules and opens the possibility that all have green eyes.

I vote for 3.[/b]

Originally posted by BongalloJoe
how would no. 3 work? i dont understand it

Originally posted by HandyAndy
You need to convey to them, while staying within the rules, that all 100 of them could have green eyes.
If they are logical creatures, they can use that information to deduce their personal eye color with certainty.

Originally posted by BongalloJoe
how? I know, its part of the answer.

They are supposed to prove to the nightwatchman they know the color of their eyes without saying anything... is that right?

Do they walk up to the watchman holding a hand mirror?

Originally posted by lemon lime
They are supposed to prove to the nightwatchman they know the color of their eyes without saying anything... is that right?

Do they walk up to the watchman holding a hand mirror?

Originally posted by BongalloJoe
no, but they do neeed to prove it to the watchman.
This is why i need a response, HandyAndy.

Originally posted by BongalloJoe
you are right except for one thing-you have to tell them something they already knew. its not the key to figuring this out, its part of the rules.
you have to tell them something that they did not know.
the eyee color is irrelevant.
These are 2 of your replies joe.totally contradictory

Originally posted by venda

Originally posted by lemon lime
I think he meant the 'color' green is irrelevant. The main point is they all have the same eye color.

Originally posted by HandyAndy
The issue has been resolved. Venda is not questioning eye color.

The message to the captive green-eyed people has to be [b]something they already know.[/b]

Originally posted by lemon lime
[b]The message to the captive green-eyed people has to be something they already know.

Yes, I already knew that.[/b]