In this experimental chart, four variables concerning various investigations are set out in this experimental format. An event's Pragmatics value is represented by the bubble size; its method value is represented by the opacity of the bubble; its aesthetics is represented by the width of the surrounding circle, and its gatekeeping is represented by the trace 1 chart element which layers a black diamond over each event where the value is 1 (YES). The scale on the vertical axis represents an accumulation of all investigations over time; so the upward trajectory has no meaning in this chart.