Last week I went back to Dubai on private business. The city continues to show the obvious effects of the GFC, with half empty or half finished or shelved projects commonplace. For the first time, I ventured to the top of the world’s tallest building, the Burj Khalifa. When my practice designed the Eureka Tower in Melbourne, it was the tallest building in Australia. The Burj is three times taller. Three times. It’s staggering to contemplate that it’s almost a kilometre high. Without question, it’s an impressive building, and an impressive feat of engineering. There are beautiful moments. But, it inevitably throws up the question: as architects and engineers in today’s computer-driven world where anything’s possible, just because you can do, does it mean you should do it? Let me know what you think.