Before we get into the extended mind, let’s start with its technological counterpart, the Metaverse. Here’s the official definition
from the best known primer on the Metaverse:
The Metaverse is an expansive network of persistent, real-time rendered 3D worlds and simulations that support continuity of identity, objects, history, payments, and entitlements, and can be experienced synchronously by an effectively unlimited number of users, each with an individual sense of presence.
The metaverse is not the first such technology either: can you think of another technology that allows “persistent, real-time rendered 3D worlds and simulations that support continuity of identity, objects, history, payments….”?
That would be the most important technology in the history of civilization, namely, writing. Writing happens to do all these things and much much more. It enables mathematics and science; it enables bureaucracy, politics, treaties, maps, boundaries and nations.