Leave the D*** Lights On

We respond (in kind) to the criticisms in this issue by Randolph [Randolph, Paul H. 1989. Turn off the lights. Interfaces19(4, July–August) 89–91.] levied against our paper [Mosier, Charles T., George W. Sheldon, Glen E. Avery. 1988. Should we turn off the lights when leaving. Interfaces18(5, September–October) 62–71.], which presented an economic decision model of fluorescent light usage.