D2 is shorthand for the second global economic depression.

Unlike the Zombie apocalypse -- the complete collapse of civilization, nuclear winter, EMP wipeout, 99.99% mortality pandemics, etc. -- D2 is real, tangible, and here today.

You can't outlast D2 by stockpiling canned goods/bottled water, buying gold, or arming yourself to the teeth. It will stretch on for a decade or more.

The way to survive, even thrive, during D2 requires a different approach. It requires a vibrant and productive local economy. It requires people with the skills/equipment to contribute to it and the wherewithal to defend it if necessary.