Convention (norm) States and in Germany that motorists drive on the right side of the road, whereas in New Zealand and the United Kingdom motorists drive on the left. The standardization of time is a human convention based on the solar cycle or calendar. The extent to which justice is conventional (as opposed to natural or objective) is historically an important debate among philosophers. The nature of conventions has raised long-lasting philosophical discussion. Quine, Davidson, and David Lewis published influential writings on the subject. Lewis's account of convention received an extended critique in Margaret Gilbert's "On Social Facts" (1989), where an alternative
Rim Drive Wizard Island along the way. Continuing north on Rim Drive past the North Entrance Road junction, visitors traverse the back side of Llao Rock. This is the beginning of "East Rim Drive". The next turnout for viewing the lake is approximately two miles beyond the North Entrance Road junction. Viewpoints along East Rim Drive are generally not crowded except at the Cleetwood Cover parking area which is at the north end of Crater Lake. Cleetwood Cove is the trailhead for the only hiking trail down into the crater. The National Park Service maintains a marina for boat tours at Cleetwood