This is thoroughly wrong. Cloud Spanner sacrifices the "A", not the "P." The cool thing being accomplished here is that the sacrifice to the A is greatly reduce

This is thoroughly wrong. Cloud Spanner sacrifices the "A", not the "P." The cool thing being accomplished here is that the sacrifice to the A is greatly reduced (five or more 9s). There are several documents on the subject linked right off that page and elsewhere in these same comments, like this one: https://cloud.google.com/spanner/docs/whitepapers/SpannerAndCap.pdf https://cloud.google.com/spanner/docs/whitepapers/SpannerAnd...