In his book "The Price of Inequality," Joseph E. Stiglitz argues that trickle-up economics can be effective, contrary to the common belief that trickle-down economics is the only viable approach. Stiglitz highlights that when wealth is concentrated at the top, it can stifle economic growth and social mobility. By contrast, when resources are directed to the lower and middle classes, it can stimulate consumption and foster a healthier economy. This perspective emphasizes the importance of equitable distribution of resources for sustainable growth.

Stiglitz's insights challenge traditional economic theories by demonstrating that an economy thrives when wealth is circulated among all levels of society. The idea is that when people at the bottom have more money, they invest and spend it, which invigorates businesses and creates jobs. This provides a compelling case for policymakers to consider strategies that support economic equality rather than prioritizing tax breaks for the wealthy, as the latter may lead to stagnation and increased inequality.