No-one needs to be reminded of the continuing debate about what the next Formula 1 engine should be, and by common consent - and sense - it needs to be both simpler and cheaper than the maze-like hybrid monsters of today.
In a perfect world, many would side with Sebastian Vettel and his wistful dream of going back to V12s, but that's not the world we live in, as Toto Wolff recently reminded us.
"I strongly believe," he said, "that Formula 1 stands for high technology and innovation. If you try to crawl back in time to the famous 1980s and '90s, just because you liked it so much, it is the wrong strategy.