Question regarding research (related to research topic and writing thesis)

[arroy_0205]

I have three questions:

1. Suppose your supervisor has given you freedom to choose topic of research (for PhD). How do you decide what topic to work on?

2. Can one work on two somewhat disconnected topics and write about both in same thesis?

3. When do you feel that you have done enough work to write a thesis and get PhD
degree?

 

[fss]

1. Work on what interests you, and probably what you are doing/have done extensive research in.

2. If you can find the time and make them connected and relevant in some way.

3. When the thesis is handed in.

 

[negru]

3. When you get a postdoc position for the next year