You cannot manipulate a field to suddenly not exist or behave differently in a specific location, otherwise its not a field and would not be mathematically congruent with our existing observations.
Correct. I never said you could do that. By “manipulating a field”, I meant causing excitations in the field. A moving a magnet causes excitations in the EM field (positive and negative) for example.
That being said, I still don’t say that you cannot manipulate the characteristics of a field (I think this is what your definition of “field manipulation” was). As I said in my previous comment, proving negatives is incredibly difficult. Einstein and his peers for instance did not believe that chain reactions involving nuclear fission were possible. This is because the neutron had not been discovered yet. Based on the data that they had at the time, would it be correct of them to say “fission chain reactions are impossible”, or would it be correct of them to say “we see no evidence for fission chain reactions being possible”.
please stay quiet on the subject
I don’t know if this is a figure of speech that I don’t understand or if it is you being rude. If it is really you telling me to be quiet, that’s not nice. From your response, I assume that you are a student of science. Scientific communication must be in good faith where personal ego is removed completely. If you meant it as a figure of speech, then sorry for being preachy.