The all-weather portfolio was designed by Ray Dalio to protect his family's assets for long-term performance. It is based on the idea that you don't know what the future is going to hold and which environment you're going to be in next. Inflationary economy, commodities and inflation-protected bonds would perform best in an environment where growth was falling,. regular bonds would also perform well in that scenario. The early 2000s were a bad decade for the stock market with crashes at the beginning and again eight years later.