If I were to give you a budget to choose your perfect house, you would have a clear idea of what to buy, but it would typically be a bit boring. That’s because when you have one house, it cannot be too weak in any one dimension: it cannot be too small, too far from work, too noisy or too weird, so you’ll opt for a conventional house. On the other hand, if I were to double your budget and tell you to buy two houses, your pattern of decision-making would change. You would now be looking to buy two significantly different properties with complementary strengths – perhaps a flat in the city and a
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