( giving him a double thumbs up of her own. )
You know, all is well, no danger, proceed, we're good. They may have used it while hunting to silently communicate, to better avoid disturbing wary prey.
THIA
what issss . . . O-K?
Yes!! That one is ubiquitous among humans, even the ones who don't know any sort of sign language, isn't that interesting? I guess a universal OK signal is very very useful in lots of situations.
𝗔𝗩𝗔𝗔𝗥.
THIA
i believe that your creatorsssss have . . . an expressssion.
( thinking it through very intently; slowly raising his arms, as if to hit her, then lowering them again and giving her, carefully, two thumbs up. )