質問も良し悪し

Today, I asked question in the seminar. I asked two questions there, first. 
Firstly I asked does E_0 depend on A ? it was indeed nice question, but the consequence was not good. Speaker answered it does not, and I just nodded, but it was misleading though the definition is correct.  I should have asked if E_0\cong E_o', is it weird that E_0^g is all isomorphic but it is defined as A. I should learn I keep question what I asked, and not go to another one so soon. 
It was an expensive lesson.