Very true! I excluded SCADA and most biologics because they are not necessarily intrinsically harmful in the way I wanted to discuss. There are people far mor

Very true! I excluded SCADA and most biologics because they are not necessarily intrinsically harmful in the way I wanted to discuss. There are people far more qualified than I am -- yourself probably included -- who can discuss how to safely build those kinds of systems. I wanted to touch on a slightly different problem; deciding to build something which is fundamentally impossible to do safely, rather than something which is very difficult to do safely.