It's been said many times in Formula 1 that one of the best ways to close up the grid is to leave the rules alone. By doing that, the law of diminishing returns at the front limits the top team, while the pursuing pack are slowly able to chip away at any deficit they had.
Such rule stability is why this season has all the potential to deliver a thrilling three-way fight between Mercedes, Red Bull and Ferrari that could become one of the closest we've seen in years.
But against the backdrop of what could be a gripping 2020 campaign, there lies intrigue about the impact that Formula 1's 2021 rules overhaul will have on the spectacle.