Reach with room to grow

The pre-registered reading final

Every run of the two arms has finished and had every world it kept read. A run emerged where it has a confirmed emergence epoch and the orientation-aware census of some world it kept, from that epoch on, reads replicator_share of at least 50%. The control is the host–parasite sweep's economy-off arm at cap 128, at radius 1.

H-reach128

Radius 4 with room to grow emerges more often than the cap-128 control at radius 1: shown

One one-sided Fisher exact test at p < 0.05: radius 4 119/270 against control, radius 1 11/270, p = 1.5e-30. An eligible parent is an emerged world whose terminal stored world reads a share of at least 50%; no later sweep's parent rule is set by it.

Replicators by the orientation-aware detector

The detector reads a random sample of 256 cells of a stored world and runs each cell's tape down a chain of 5 runs against fresh noise, each copy carried into the next run. After the last run the first half holds the fourth copy, back in the tape's own orientation even for a tape that writes its reverse; the cell passes where 3/4 of its positions match the original, each position read by the majority of 5 trials. The locked census counts only same-orientation copies among the 16 commonest tapes, so it reads zero in worlds of reverse copiers. Only the worlds a run kept are read — the first and the last, one about every 1000 epochs and the one nearest the transition — so every run is read at the same cadence, and a first replicator epoch here is no finer than that. Live samples are not used. A run is measured once the corpus pass has read every world it kept; until then it counts in none of the census columns, and the pass is re-run as runs finish. A world holds replicators where at least 50% of its sampled cells pass. This is a companion reading: it relocks neither the census nor the emergence rule (#245).

Download oriented census (CSV)