(Translation in Italian Translation booking)
Are my assignments mandatory? It depends.
There are students that overreact by doing a lot of things. Good. For these students my assignments are optional: do them only if you like to contribute on the subject I’m proposing.
Assignments are mandatory for those students who don’t know what to do. In the following, if you are going to warm up, assignments may become optional …
Andreas Formiconi 
I approve this state of work…. I’ll personally take account of all the assignments and use them as my personal guide. I think that professors in general should just let their students be free but inside their competence area.