The constraints

Every car has different brake feel, throttle response, weight transfer. Switching means constantly re-calibrating instead of refining. The SFL doesn't have enough downforce to mask bad technique — sloppy brake release is felt immediately.

Fundamentals learned in a lower-downforce car transfer up. The reverse isn't always true. And with one car, there's no "maybe a different car suits me better" excuse. Improvement has to come from the driver.

Learning follows phases: orientation (1-2h), rapid improvement (5-10h), plateau (10-50h), mastery (100+h). Most people switch tracks at the plateau, chasing the dopamine of early gains. They never reach the deeper phase where real skill develops.

Staying on the same tracks forces you to confront your variance honestly. You can't hide inconsistency in novelty. Same corner, over and over, reveals every gap.

Monza — heavy braking zones, chicane precision, high-speed discipline.

Silverstone — flowing high-speed corners, Maggots-Becketts-Chapel tests commitment.

Suzuka — figure-8, technical variety, the Esses demand rhythm.

Spa — elevation changes, Eau Rouge tests everything.

All Grade 1 circuits. Each tests different aspects. Together they build well-rounded fundamentals.

Constraint drift is the main risk. "Just this one new track" or "different car for variety, just one session." Each exception seems harmless. Accumulated, they destroy the experiment.

Boredom is expected, not a signal to change. Plateaus are expected — push through with better practice quality. 12 months isn't forever.