* Here Richard Crownover, M.D., Ph.D., remarks: “It is an odd quantitative choice to scale everything to the tiniest measured value. It’s the least precise measurement and any slight change in that number would throw the scale about wildly.”—My response: (1) Since 0.001 microSv/sec. is not only the tiniest measurement but also the tiniest measurable value for this device, it is a logical endpoint to my scale, and maintains consistency with most other tables in Carbon Ideologies. (2) I made this particular measurement many times, and always got the same reading. It is, of course, possible that my darkroom reading, or any of these other lowest measurements, was wrong, but I presume that most or all of them were comparable; getting the lowest possible reading deep in the Barcelona subway, for instance, is highly plausible. (3) The frisker was calibrated (see here), and in Japan it read in close conformance with other scintillation meters. At 2.0 micros (the manufacturer’s lowest testing benchmark), it read 2.04 micros. At the manufacturer’s tested 80 micros (my own highest field reading was 41.5 micros), it read 77.0 micros.