Settling in for a long night of electrophysiology. It's been a while, and I find that I've missed it, this strange vigil. I watch rasters and waveforms scroll by while everyone else is off sleeping or using their brains in normal, less reflexive ways. It's exhilarating, being able to see these tiny events, and at the same time humbling, knowing how little we understand of it yet. The challenge is to know how to use the tools and the ideas without being blinded to what might have been missed.