The periodic or compensating errors of the planets is another instance.

Compensating errors - Two errors of the same amount, one on each side of the ledger.

Compensating errors are multiple unrelated errors that would individually lead to an imbalance, but together cancel each other out.

Andersen, Kirsti: One of Berkeley's arguments on compensating errors in the calculus.

Both men's figures for the Earth's circumference were uncannily accurate, aided in each case by mutually compensating errors in measurement.

According to Burton, Berkeley introduced an ingenious theory of compensating errors that were meant to explain the correctness of the results of calculus.