You're right! In an other article I published I wrote: When we think of 3D modeling, we imagine a user interface where we can, with a single click, stretch a 2

You're right! In an other article I published I wrote: When we think of 3D modeling, we imagine a user interface where we can, with a single click, stretch a 2D rectangle and then extrude it; again with a click, we can select an edge and apply a fillet. This is typically what we do with Fusion 360 or open-source software like FreeCAD. In fact, this is parametric modeling. The graphical interface, where you can rotate or zoom in on your 3D model, is just that — an interface, as its name suggests. However, behind the scenes, the software is managing parametric modeling. To illustrate this, it is entirely possible in these programs to edit a shape and assign a new value to a given edge or cylinder. This is possible because it’s parametric modeling.