# Study 000C Discussion

## What changed after exhaustive correction

The most important thing about this full-data pass is what **did not** collapse.

The program still supports:

- phase-structured adaptation
- selective rather than uniform remodeling
- turnover as the more accessible running lever
- mixed internal cost

What changed is the ecology precision.

Earlier packages could be read too quickly as though the non-running ecology in the early flagship window were simply "indoor conditioning." The exhaustive raw-summary cross-reference shows that this is too blunt. The Garmin `indoor_cardio` label hid a meaningful outdoor hybrid-conditioning layer, especially in `2025-05` and `2025-06`.

## Why that refinement strengthens rather than weakens the program

This correction does not weaken the running claims. It improves them.

It tells us that the strongest stabilization-resource claim should be read more precisely as:

`later running specialization narrowed into a lower stabilization-demand running context`

not:

`the entire conditioning ecology became indoor and stable`

That is a better statement because it is both more conservative and more accurate.

## What the complete program now says

The corrected program can now be read in a tighter order:

1. The full system reorganized repeatedly across six years.
2. The broader conditioning ecology included hidden outdoor hybrid work.
3. The later flagship running window nevertheless narrowed into a cleaner treadmill-dominant specialization context.
4. Inside that running context, speed gain was assembled mainly through cadence rather than large stride expansion.
5. Under higher-demand running probes, cadence stayed more preservable than stride expression.
6. Internal cost improved in some ways, but not enough to erase unexplained session-level burden.

That is a stronger full-data story than any earlier package could make alone.

## Most important complete-program conclusion

If the whole corrected dataset is forced to say one thing as clearly as possible, it is this:

`adaptation did not occur by making the system uniformly more normal. It occurred by narrowing the ecology, selecting a more manageable running context, preserving the most accessible mechanical lever, and tolerating a mixed cost profile`