He finds the most obvious suggestion that it is a mere measuring error unlikely, because similar results have been found by many different groups, operating independently and, in at least one case, without knowledge of Dr Allais's results.

ECONOMIST: Gravitational anomalies

"There isn't going to be one magic bullet to solve the problem of diagnostic error, but we can start by consistently monitoring and measuring it, " says David Newman-Toker, lead author of the study and an associate professor of neurology at Hopkins.

WSJ: Adding Up Diagnosis Errors