What is a problem with using measures of productivity in an economy?

A problem with using measures of productivity in an economy is that they do not account for external factors that may be contributing to the growth or stagnation of the economy. For example, measuring productivity may ignore the effects of weather, natural disasters, or political upheaval that can cause wide swings in the economic landscape. Additionally, such measures may not take into account social and economic changes that can also drastically alter the economic landscape. Finally, productivity measures may overlook certain differences in growth or losses within various sectors of the economy, which can also be important to understanding a nation's economic health.