Metaphors for communicating basic technacy system rules
Networked systems rule

Learn to design and make things that
work together
Substitution Rule (improvise)

Learn to design and make components that are then used in specific ways to feed into new solutions or ideas.
Repeat as required.

Nested systems rule
(supply chain / dependencies / fractal systems)

Learn how and why your solution was reliant on many previous processes - right back to raw ecology, basic knowledge or first tools.