On the basis that, if you had to name a single name, Ralf Schumacher has been the single least impressive driver so far this season, with whom should Toyota replace him for 2008 - and beyond?
It's a trickier question even than it at first looks, and even as I write I'm sure it's occupying the deceptively fecund mind of Toyota Motorsport's affable president, John Howett, the Formula 1 team's de facto principal.
For it was at Monaco two weekends ago that the driver market began to stir itself into action for the first time, and a lot of people were having who'll-go-where-in-2008 conversations. A hell of a lot, actually, Howett one of them.
As is so often the case in F1, the most coveted (read: the best) four drivers are contracted to the best two teams.