Why is it that nowhere can I find any discussion of the matter of posing human figures, a matter with artistic, technical, and psychological aspects. In the latter case I have seen by experience if you can make the  the poses and other geometric components of the scene true enough the viewer cant help participating psychologically in the scene. I've done it a few times but it requires painstaking work, yet our 3d aps do next yo nothing to make it easier. It often looks like the ap developers have never made and posed a simple scene.

More simply:

How to turn a prop into a hand held smart prop and save it all in the library. Where is this process documented?

We don't use our hands one finger at a time so why de our posing programs have to work that way.

Wouldn't be useful to take a basic pose and add body language just as we add emotions to face expressions. Stage actors know that the body language can be the more important of the two

By ignoring this essential topic we allow our applications to avoid the hard work of making posing natural and intuitive and dump the tasks on artists thus getting in the way of artistic creativity.