In an environment where innovation has been strictly regulated against (better engine management software? NOPE. better foil design? NOPE), the fine art of sticking to the letter of the law but totally bending the spirit of it is naturally where the bleeding edge of F1 design is going to lie.
This is spot-on.
One of the best examples in recent memory was the so-called "F Duct" that was featured on McLaren Racing's MP4-25 car in 2010.
For those that are not aware, FIA sporting regulations strictly prohibit the driver from controlling the aerodynamic characteristics of the machine, for example, via electronic controls on the steering wheel or levers in the cockpit.
However, McLaren came up with a system that allowed the driver to block an air flow duct with the driver's leg. This permitted air to be channeled in an "on demand" fashion, such that the rear wing would stall and result in reduced drag. This allowed the car to achieve an advantage in the straights.