“Is it”?
Well, of course it is David Gross, you ninny. Be more forthright! Stand up. Be a man.
Do not pose your answer in the form of a question. Or are we playing “Jeopardy” now?

Apparently, Gross “…set out to disprove quantum field theory – and the opposite occurred!”.
Well, this eventually happens to all of us, doesn’t it? In my case, sooner.