Toronto: Fighting the commuter tide

It's 4pm, and as the work day ends, I'm walking north through the PATH system under downtown Toronto's office towers. Moving south towards me is a seemingly unending flow of human beings. This is the commuter migration home. At the southern end of the tunnel system is the main rail station. I imagine most of these downtown workers are going home by train. Like the tide, tomorrow morning the flow will be reversed as they make their way back to their highrise desks and cubicles.