Do you like being on the beach? I guess so and so is Jill.
Beside the fun part of it, you could see in the video the precise capabilities of Jill (the sister of Jack) to use her fingers in a virtual environment. This is actually important when simulating difficult assembly situations in which precise grasping are an issue.
Using the digital human model Jill (... and of course Jack) you are able to validate and optimize your manual assembly processes already during the assembly planning.