In a press release and a five-page letter to the scientific community, Peter Kim asserts that although Merck had to correct a statistical method, the 18-month conclusion is still valid based upon the data Merck had at the time.

FORBES: Magazine Article

Even if the mismatched income appears correct, re-calculate the proposed tax to be sure the appropriate method has been used and the amount is correct.

FORBES: IRS Notices & Letters: It's Stop the Machine Time Again

So perhaps the predicted trajectories are correct after all, but the flaw lies in the Doppler-ranging method used to measure the probes' actual trajectories.

ECONOMIST: A space oddity