Barry Horwitz explains how to improve team communication, relationship, and productivity. Have you heard about the “Two Pizza Rule?” It was introduced by Jeff Bezos in the early days of Amazon. The idea: every internal team should be small enough that it can be fed with just two pizzas. Beyond that, Bezos believed, the group would start to become less effective. Pizza aside, there is research to back this up. The “Ringelmann Effect” suggests that the larger the group, the…