Once upon a time, a post-race test would see almost a full complement of riders taking part. But in the past couple of years that has changed, as spec software has meant fewer things to do.
The spec software, the engine freeze, the aerodynamics freeze: there is less to test, and so more factories are opting out of the one-day post-race tests.
So it was at Jerez on Monday that the factory Ducati riders, the Ecstar Suzuki team, and the Gresini Aprilia squad all decided to skip the test at Jerez in favor of some private testing at Mugello later in the week.
Behind closed doors, they can work a little more freely, away from the prying eyes of the press, and especially of a contingent of photographers.
There are other reasons to be wary of a post-race test. The track is in as good a condition as it is going to get on the Monday after a race. It has been swept clean by a weekend of racing, and the last class to smear its rubber all over the track is MotoGP.
So the bikes are treated to a clean, well rubbered in circuit, allowing lap times to drop. The average improvement between the race and the test was nearly 1.3 seconds a lap.
About half the 16 permanent riders who took to the track on Monday improved their times from qualifying. It is fair to say that Monday tests can be deceptive.