This isn’t a kinematics homework where you can draw the links and joints and get full marks. You have to actuate them. I should paraphrase that for interviews.

This isn’t a kinematics homework where you can draw the links and joints and get full marks. You have to actuate them. I should paraphrase that for interviews. "This isn't a CS homework where you can cite Big-O and get full marks. We have to be able to implement code that uses them." And by that, I don't mean that you have to write all of the actual code. But one needs to be able to specify it exactly so someone could implement it and know enough about that to tell someone of the pitfalls in the current problem context/framework.