Physics simulation make us feel that it it real. With a photo-realistic hand, we can feel like we are in the scene and touch it. It’s a sort of FPS of Blender. I made it. The drawback of the video is, the hand is not enough in length when I want touch a thing in a distance. Sometimes the hand’s inner mesh is exposed. Rather than hand, realistic arm is needed for it if possible. The hand model came from Rigged Hand | Blend Swap by DennisH2010, distributed by CC-BY-SA.