Communication of important ideas can lead to significant impact by enabling a small group to influence public opinion, start movements, or lobby governments. Spreading crucial ideas strategically is often neglected as there is no commercial incentive. Advocates devoted to social causes play a vital role in challenging the status quo. Successful communication efforts can influence millions of people and create lasting change. Communication careers can range from full-time roles in the media to part-time roles as community builders. Community building, like Susan B. Anthony's work in organizing and building the suffragist community, can have a substantial impact on a more person-to-person level. Part-time positions in community building, like the Stanford Existential Risk Initiative founded by a student, can also create significant change by engaging individuals in crucial topics.