The Stirling Engine comes up right often as relevant to the changing energy issues.
Just because something is new, does not mean it is always better.
Mechanical bull switches and mechanical archaic grid switching and controls are recommended in case of cyberwar attacks on the electrical grid, for instance.
The 600 volt DC third rail has been around for a good while.
What other things in our lives ought be protected, or brought back?
What you really need is Food, and Shelter.
Tools that help insure the basics as basis for forays into the unknown, are what I am after here.
"Almost" Good Answers: