# The way to Acarien puzzle

You are on a quest to the find the lost kingdom of Acarien. On your way, you end up at a fork in the road. Both paths look exactly the same. At the junction sits a wise man. The wise man will only speak the words “ça” or “ɠa” meaning either yes or no (you don’t know which means which). The wise man will answer any yes-no question truthfully but will only answer one question. What one question can you ask the wise man which from which you will be sure which path leads to Acarien?

• The setup rather strongly implies that we have no common language, so there isn't any question I can usefully ask. – Peter Taylor Oct 24 '14 at 10:09
• @PeterTaylor Assume he took a vow of silence, but was interrupted at the last second, so his vow was incomplete. – Zibbobz Oct 24 '14 at 15:33

Question to be asked = "If I ask you if this is the correct path to go, would you say ça" ? 4 possibilities:

ca = yes
path' correctness = yes

ca = yes
path' correctness = no

ca = no
path' correctness = yes

ca = no
path' correctness = no