T H _ R _
_ R _
6
' F ' S
_ N
T H _
S _ N T _ N C _ .
O N _
_ F
_ V _ R _ G _
_ N T _ L L _ G _ N C _
F _ N D S
3
_ F
T H _ M .
I F
Y _ _
S P _ T T _ D
4 ,
Y _ _ ' R _
_ B _ V _
_ V _ R _ G _ .
T _
S _ _
5
_ S
R _ R _ .
I F
Y _ _
F _ _ N D
6 ,
Y _ _
_ R _
P R _ B _ B L Y
_
G _ N _ _ S .
T H _ R _
_ S
N _
C _ T C H .
M _ S T
P _ _ P L _
F _ R G _ T
T H _
' O F ' S .
T H _
H _ M _ N
B R _ _ N
T _ N D S
T _
S _ _
T H _ M
_ S
' V '
_ N S T _ _ D
_ F
' F ' Clue
THEY ARE 10.5 AND 0.5 YEARS OLD. A COMMON WRONG ANSWER IS 10 AND 1. THIS IS WRONG BECAUSE THE DIFFERENCE IN AGE WOULD BE 9, NOT 10 IF THERE WAS ONLY ONE BLUE-EYED PERSON ON THE ISLAND, THEN THAT PERSON WOULD LOOK AROUND AND SEE THAT THERE IS NO OTHER BLUE-EYED PERSON. SO HE REALIZES THAT HE IS THE ONLY PERSON WITH BLUE EYES ON THE ISLAND AND LEAVES ON THE DAY OF THE ANNOUNCEMENT. IF THERE ARE 2 BLUE-EYED PEOPLE, THEN THEY LOOK AT EACH OTHER. EACH ONE EXPECTS THE OTHER TO LEAVE ON THE DAY OF THE ANNOUNCEMENT. HOWEVER, ON THE NEXT DAY, WHEN THEY REALIZE THAT NEITHER OF THEM LEFT THE ISLAND, THEY WOULD BE ABLE TO DEDUCE THAT BOTH OF THEM HAVE BLUE EYES. THEY BOTH LEAVE THE ISLAND ON THE SECOND DAY. THROUGH MATHEMATICAL INDUCTION, THIS LOGIC CAN BE APPLIED TO THE 100 BLUE-EYED PEOPLE ON THE ISLAND. SO ON THE 100TH DAY, ALL THE 100 BLUE-EYED PEOPLE LEAVE THE ISLAND BECAUSE IF HE WENT BACK IN TIME FROM UPSTAIRS, THAT WOULD BE A NASTY FALL BECAUSE THE HOUSE WOULDN'T HAVE BEEN THERE 200 YEARS AGO THERE ARE 6 'F'S IN THE SENTENCE. ONE OF AVERAGE INTELLIGENCE FINDS 3 OF THEM. IF YOU SPOTTED 4, YOU'RE ABOVE AVERAGE. TO SEE 5 IS RARE. IF YOU FOUND 6, YOU ARE PROBABLY A GENIUS. THERE IS NO CATCH. MOST PEOPLE FORGET THE 'OF'S. THE HUMAN BRAIN TENDS TO SEE THEM AS 'V' INSTEAD OF 'F'