# Study 000M Abstract

This study tested whether `ecological narrowing` should be interpreted as part of the compensation phenotype in the altered-biomechanics archive, rather than as incidental drift in activity preference.

The corrected archive already supported:

- selective expression (`000D`)
- operating-envelope behavior (`000F`)
- support-dependent low-burden expression (`000H`)
- more than one successful low-burden mode (`000K`)

`000M` asked whether the ecology itself reorganized around those constraints.

The strongest signals were:

- running share of structured hours rose from `21.00%` in `2025` to `84.18%` in `2026`
- treadmill share of running miles rose from `92.78%` to `98.74%`
- outdoor running share fell from `7.219%` to `1.264%`
- the early flagship window still contained `7` hybrid GPS-bearing cardio sessions totaling `9.45` miles and `4.99` hours, while the late flagship window contained `0`
- low-burden outside expression succeeded only in ecologically supported states, not broadly across contexts

The best full-program reading is:

`Yes, supported.`

The archive is better explained by selective ecological narrowing as part of the compensation phenotype than by incidental ecological drift alone.

The narrowing was not total simplification. Some non-running support ecology was retained. But successful running expression became more concentrated, more stabilized, and more dependent on ecologies the constrained system could use successfully.