Ferrari team principle Mattia Binotto has revealed how he believes the technical directive the FIA introduced last week in Canada was a ‘mistake.’ The technical directive that was announced by the FIA was an attempt to reduce the impact of the ‘porpoising’ of the cars which is causing severe pain for the drivers in the race. Ad/> This initiative from the FIA was believed to try and ‘formulate a metric to measure the vertical acceleration loads of the cars and force teams who are affected the most to dial out the bouncing.’ Formula 1Hamilton hopes Mercedes will be 'cautious on experiments' after Canada podiumA DAY AGO Ahead of the Canadian Grand Prix, the FIA gave teams an option to add a second stay to strengthen the floor, a solution that was found on the Mercedes cars during Friday practice in Montreal.