Build, Test & Iterate Until Safe...
![Image](https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEgNAlALj96KAp6M-Eydx7qD5iTa9wNFVKAr5buh6hCT2CjDM9N0AxN74ta5NJMbmthRtF1x_SuoO26hqTSQAxelnp8FEfYNRjZmZ1IRRYrRk5MRHjMVsdfzgPcdERaoW3g5bs4dxgmer5pYj4-t1jkEiu0wvO9G43cZxAAYwQFDUpAu-U7VJ3VpY7JpG78/w640-h426/Post-office.jpeg)
I'm of an age that I can remember when heaters in cars were an optional extra and not standard fitments. As were radios - cassette-players were only just appearing, and at some considerable expense [again optional, mostly third-party add-ons] - and as for sat-nav, well, let's say that geo-stationary orbital arrays were quite a way off into the future distance back in the sixties. The kind of stuff we take for granted these days, even as relatively recently back then at the height of the post-war boom years, with its 'white heat of technology', would have been as but science fiction to us. But back then, we hadn't committed our entire economy and existence to essentially one strand of technology: electronics and computing were merely adjuncts to the existing engines of commerce and industry; and bureaucracy was run pretty much by pen and typewriter on paper and card. Fast forward to now, and nothing - nothing [essential to our lives in the so-called 'First World