Well. What can he even say in response to an admission like that? Geordi's no Counselor Troi, able to sense a person's emotions and steer them toward a healthier mental state.

In the end, he decides it best to pull the conversation away from the worst part of it. There has to be someone out there better qualified to discuss terrible genetic experiments than him. "Well, one of my best friends is an android, and he sometimes does that too."