Benjamin Franklin's reputation is so much one of appearing scientific investigation with common sense empiricism that it is somewhat startling to realize how ____________ the great experiment's mentor truly was.
답은 speculative와 conjectural 인데 일단 that 앞까지 무슨말인지 이해가 잘 안가서 뭘 보고 답을 찾아야하는지 모르겠습니다.