Then / Now
The body's structural pattern was tuned across thousands of generations. The environment it lives in now has shifted in many dimensions at once. The angle of misalignment in each dimension is shown below.
ancestralmodernlarger angle = more misalignment
A productive tension
Ancestral substrates aren't "better." Modern substrates aren't "worse." Each was — and is — coherent in its own world. The work isn't to roll back the clock. It's to identify the few dimensions where the angle is largest, and re-introduce just enough variation to bring the body back into a range it knows how to inhabit.
Phase 1 of this work shows the structure. The next phase is targeted intervention design.