One statistic captured the state of play in Argentina after the first day of practice. Of the eighty-three (83!) Grand Prix riders who took to the track on Friday, just a single rider failed to improve their time from FP1 to FP2. That rider was Tatsuki Suzuki, and the reason he did not manage to improve his time was because he crashed early in the session, leaving himself too little time to go faster.
Why is this remarkable? Normally, there would be somewhere between four and eight riders who do not manage to improve their time between sessions on Friday. At Mugello in 2015, for example, there were six in MotoGP, five in Moto2, and eleven in Moto3, a grand total of twenty-two, and broadly representative of a normal race weekend. The fact that almost everyone managed to go faster illustrated the problem with the track perfectly.
The problem? The track is filthy, to put it simply. As a result of a lack of use, the dust and dirt which settles on any uncovered surface just settles into the asphalt, and is never swept from the track. With no bikes or cars circulating regularly, the track remains green, its virgin surface unsullied by the dark rubber of motorized monsters. No vehicles on track means no grip.