there isn't much known about yoi. all we know is that they don't have a specific task assigned to them. that's very much everything that's known about them. or is it?
we know that humans are part of the species "homo sapiens" right? yois are called "evanescens punctum"
yois are peaceful and intelligent, for the most part. However, should humans really stop every of their development to just focus on a species they don't even know about?