@HKHan99 welcome! You are not alone in desiring things from Poser that those of us who have been using it from version 1 have been wishing for nearly 20 years. Any child of any gender who's ever played with a doll or action figure knows that you can't bend an arm through the body. Poser's initial incarnation was as a posing aid for artists, with a figure (fondly called "Woody") like those string and ball-jointed models seen in many an artist's studio. But Woody in Poser is not wood and string, but polygons and pixels, which exist in a virtual realm where almost anything is possible (a la The Matrix) and any restrictions or limitations on posing a figure or props must be implemented at a very low level. Joint rotations for limbs CAN have limits set in Poser, so that when rotating parameter dials, the limits of joint bends are adhered to.

Unfortunately, not everything is so simple. Inverse Kinematics, where multiple actors are rotated and positioned in a chain by dragging one body part around, involves quite complex calculations to solve the necessary rotation angles. For early Poser, on 20 year old Mac/PC hardware, it was much easier and more responsive to just let the algorithm do its thing and ignore joint rotation limits. Now most modern PCs certainly have the grunt to deal with that AND apply joint limits to IK posing responsively, but Poser's ownership and development teams have had other pressing priorities (bugs, new features) to deal with, so this hasn't happened yet.

Dealing with soft-body dynamics, which handles how skin and flesh would deform when limbs collide is another area where Poser could have pushed the boundaries, but has not yet arrived at a point where it's seamless and simple to do and "Just happens" when users expect it to. We have a Bullet physics engine which could potentially do that, but as with many features of Poser which originated externally to the development team, there are restrictions on how well such things can be integrated into Poser, especially if they have to be licensed.

I remember that there have been quite a few excellent How-To references for Poser over the years, which covered topics such as figure creation and conformed/dynamic clothing that suddenly become dated when Poser releases a new feature that was not previously available. Poser's manuals, though replete with much detailed information, have never had the luxury of explaining at length WHY a user would use certain techniques in creating their artwork, rather than others. That kind of information, can generally be found in forums like this, though. Many experienced hobbyists and vendors are delighted to be able to assist newcomers to Poser and 3D art.

Just ask, and we'll try to help ?

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