Manufacturers often claim that their particular toothbrush design is better than the competitors, but is it? As a result, engineers must consider the economic issues involved with selling the products they create, as well as their functionality: to produce the best possible toothbrush regardless of cost, or the toothbrush that will sell the most,…

Throughout history, societal investments in children have resulted in increased prosperity for individuals, communities, states and nations. This proved to be the case for California in the 1950s and 1960s, when the state strongly supported children's futures. Despite once following this path to prosperity, California has de-prioritized children…