I am currently a PhD student and I need to choose a dissertation committee as I will be graduating soon. (I already have a postdoc lined up.) It seems the only function of this committee is to read my thesis, attend my defense, and decide whether to grant me a PhD.
Assuming my dissertation committee serves its purpose and grants me a PhD, what further relevance do they have? How should I choose my committee? In particular, is my committee still important after I graduate?
The reason I'm asking is because I don't really know who to choose. It seems like I should just ask whoever in my department is available. Should I be considering other factors? For example, it is good to have "famous" researchers on my committee?
I asked my advisor and she didn't voice an opinion and said it was essentially up to me who to choose.