Should architects boycott Prince Charles?
Détente is in short supply in the world of architecture.
A quarter of a century since Prince Charles made his now infamous "monstrous carbuncle" speech denouncing modern architecture, he has been invited to give another lecture at the Royal Institute of British Architects.
The event, which takes place tomorrow night, is sold out - but in recent days, prominent architects have been calling on their colleagues to boycott the speech.
The background to this is The Prince of Wales' intervention is a proposed housing development in Chelsea. The design, commissioned by the Qatari royal family, is by Rogers Stirk Harbour, and has been derided by the Prince as "unsuitable" and "unsympathetic". What has incensed leading architects is that the Prince has written to representatives of the Qatari royal family suggesting an alternative plan by his favoured architect - the classicist, Quinlan Terry.
Leading the charge to boycott his speech is Peter Ahrends, whose firm's design for the National Gallery extension was the target of the carbuncle speech. Soon after, the plan was rejected in favour of one by Robert Venturi and Denise Scott Brown.
Now, Mr Ahrends is focussing on the intervention over the Chelsea building on the grounds that the democratic process and procedure of planning is being interfered with.
The speech the Prince made 25 years ago had huge ramifications for architecture and individual architects. He opened a national debate on modern architecture which struck a chord with the public mood. It may well happen again this time around.
Broad and mainstream interest in architecture is greater than it has ever been. Many architects are concerned with community-led planning and make it their business to be concerned with the issue of climate change. In that, at least, there is common ground with the Prince. And his charge against mediocrity has over the last two decades been dismissed in the shape, variety and excitement of buildings which have emerged.
To avoid the embarrassment of empty chairs tomorrow - though I doubt Mssrs Ahrends and co will succeed in persuading everyone to boycott - surely RIBA should re-cast the event, not as a lecture, but as a genuine debate between Prince Charles and his supporters and his detractors.
I'd queue to hear that.