Gene Siskel and I were like tuning forks. Strike one, and the other would pick up the same frequency. When we were in a group together, we were always intensely aware of one another. Sometimes this took the form of camaraderie, sometimes shared opinions, sometimes hostility. But we were aware. If something happened that we both thought was funny but weren't supposed to, God help us if one caught the other's eye. We almost always thought the same things were funny. That may be the best sign of intellectual communion.