II

The second thing became historical. A tracking group responsible for objects beyond Mars had spent twenty-eight years speaking a dialect of the Solar System that almost nobody else used. Its axes were not wrong. Neither was its epoch. Its corrections were old, internally consistent, and attached to several million observations that had survived software changes by refusing to become anything else. Every time those observations crossed into the common service, translation happened. Every translation made room for mistakes. The mistakes were small enough to be tedious and large enough to consume careers. The group asked for a permanent bridge. It built one, tested it against the raw archive, and found that the bridge worked better if the far side stopped moving. The migration took eighteen months. Old observations were retained in their original form, then re-expressed through the common barycentric transform beside them. Future measurements would be born in the common frame. Nobody lost access to anything. In the final quarter before cutover, one region of the sky refused to settle as neatly as the rest. The difference was less than half an arcsecond and varied with the season. The old pipeline put the residual mostly on one side; the common transform spread it into several smaller terms. The shared service agreed with every other modern station. The local convention did not. The migration report attributed the remainder to the old transform, preserved the raw centroids, and closed the issue. The group stopped maintaining a language it no longer needed. The next navigation campaign finished three days early because nobody had to reconcile the frames by hand.

Standards are among civilization's great inventions.

A common unit lets measurements travel. A common protocol lets machines meet. A shared map lets strangers disagree about a road instead of first disagreeing about what a road is. 

Translation can preserve plurality by making contact possible between worlds that would otherwise pass without touching.

There is no ethical prize for keeping every private vocabulary alive forever. Some friction is just friction. Some incompatibility is a burden everyone is tired of carrying.

A civilization capable of learning should be allowed to standardize.

The common language earned its place here.