to set the tone

Some people clearly inhabit different realities to the rest of us. I assume this bloke imagines himself to be pursued at all times by glittering flying robot sharks, from whom he escapes by swerving to and fro across the road completely unnecessarily, occasionally swerving right in front of people from left to right then looking as if he was seriously considering attempting to squeeze down the right of the bus as it was passing through the exactly-one-bus-wide section just to the west of the RSA. Despite the right-hand lane being otherwise empty he chose not to ride in it, preferring to swerve in and out from behind buses, swerving back in immediately after overtaking them. He disappeared down the left-hand side of the buses waiting at the South Charlotte Street junction to be replaced by another type of arsehole who jumped the light and attempted to run into the side of a small lorry. A couple of streets from home in the evening a small blue car pulled out from a side street a few feet in front of me, evidently existing in an alternative environment where I had been signalling left as I approached her. In between, differing opinions of what actually happened at some point in the past created disturbances.