The article questions whether real estate investments really perform better than other types of investments in the long run. It suggests that if real estate continues to outperform, it means something important is missing from the way we evaluate investments. The researchers argue that all assets should have similar risk and return patterns over time, according to a theory called the capital asset pricing model. They propose that previous studies have not considered all the risks involved, which could explain why real estate appears to be a better investment option.