Comparative analysis of open source and commercial 3D applications, with Blender as an example

The questions are based around on the use of Blender and use experiance. Part of the questions are taken from "Great Blender Survey" from 2010, so that they can be compared to the new results.
The new questions are added for the purpose of better comparison of Blender and commerical applications with a focus on user experience and thoughts.
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