A different industrial revolution
Combustion-based human history is not a template. Chemical gradients, electrochemistry, geothermal energy, materials processing and biological fabrication can establish a very different engineering pathway.
Signals across water
Light, electrical networks, acoustics and physical interfaces have complementary ranges and failure modes. Reliability matters more than a fictional omnipresent network that works at all depths.
Engineering the transition
Moving toward the surface and, eventually, space must be earned through new pressure boundaries, dry-system compatibility, power control and a transformed vehicle design. Existing ocean practice supplies the starting principles.
