Architectural historian Alan Powers comes up with an intriguing suggestion to cure our architectural ills. Having seen the Frank Gehry exhibition at the Soane, he laments the absence of tectonic character in the master's work. 'If only you could cross-fertilise him with someone,' muses Alan. And just whom might that be? 'Herzog and de Meuron,' the sage replies. Gehry's office, incidentally, now has 120 people in it. Of these, there are a few model-makers . . . in fact 90!