I am very curious about how a development work on a 3d program like this is, I am a complete programing illiterate.) but I find this very fascinating.
You sometimes talk about doing the UI for features first before coding, how does that work? and like you work with implementing I/O plugins like obj, and talk about hooking things up, what does that mean and what does that work?

It may sound naive idiotic questions, but I am just like I say fascinated:).