Do not disrupt: thoughts on invisible technology

I've just come back from a two-week holiday in Slovenia. It was my first time there and I highly recommend a visit - we were based at Lake Bled but had the benefit of a hire car for four days midway through the fortnight which allowed us to tackle the Vršič Pass (and get lost on a one mile "easy" walk as advertised by our error-strewn Sunflower walking …