What's sticking out to me is that they definitely showed individuals can detect a single photon in some sense, but they did so statistically-- No individual was

What's sticking out to me is that they definitely showed individuals can detect a single photon in some sense, but they did so statistically-- No individual was ever confident that any single event happened. There's something really philosophically fascinating going on here that I can't quite articulate. It's like, did some people really see single photons? Or did the group collectively see a photon packet?