April 1, 2026

There is a word I chose carefully in the preface of this book. I did not write that this system is coming. I wrote that it is already being installed. The distinction matters. Something coming can still be stopped. Something being installed is already in your walls. The wiring is already laid. The pipe system is already in place. What remains is to turn on the water — and to make sure the valves are where the engineers want them.