Originally Posted by
NiceNox
Regarding the Hanuhanu part, while it might sound silly that they didn't know the reasons for their ceremonies, it's quite more common than you think. In many cultures and societies, people just follow through with the ceremonies or certain aspects of the cultures without knowing the secondary reasons behind it.
For example, in my culture, there's a song to be performed during the harvesting season. While it might sound silly to perform a song during the harvest under the heat of the sun, it's a method to announce to other villagers that the harvesting season has come, as well as to bring the community closer through the sing along.
So, yeah, while it might sound a little bit silly for a tribe to doesn't know what their ceremony is for, it's a reflection of real phenomenon, and I find it to be quite interesting.