TED-Ed: Can you solve the temple riddle? - Dennis E. Shasha

An expedition team reaches the heart of an ancient temple in The Lost City, only to trigger a curse that possesses two of the students. The team must navigate a series of hallways to escape before the temple collapses. The leader, who is not cursed, devises a plan to split the group into trios and a pair to identify the truthful path. By analyzing the reports from each group, they determine the correct path and escape just in time, freeing themselves from the curse.

What was the significance of the green smoke encountered in the temple?

Describe the process of elimination used to determine which paths to trust.