Retired EE in Fort Collins, CO. ~15 years in defense doing signal processing and collection — DSP, Transputers and Occam, RF systems, multiprocessor board design. Then Intel: ethernet switch hardware, later leading hardware and embedded software teams, retiring as a director of engineering over the networking board products. Ran my family's investments off spreadsheets the whole time, and eventually wrote RangefinderInvest to replace them. hello@kalmansoftware.com