Frontier 100¶

A dependency atlas for 100 technologies. Use it to ask what is binding now? and what should I learn next?

Browse by specialization
Seven technical routes.
Browse by feasibility class
Deployed -> active frontier -> large engineering -> missing mechanism.
See the dependency pattern
Technology -> bottleneck -> specialization -> substrates -> foundations.

Classes¶

Class	Meaning	Count
A	deployed / early deployment	24
B	active research / frontier	49
C	known-physics large engineering	15
D	validated general mechanism missing	12
E	no credible path under current physics	0

Classifications are heuristic and expected to change. Open a PR with current primary evidence when updating one.