  Solidarity is one of the fundamental values at the heart of the construction
of peaceful societies and present in more than one third of world's
constitutions. Still, solidarity is almost never included as a principle in
ethical guidelines for the development of AI. Solidarity as an AI principle (1)
shares the prosperity created by AI, implementing mechanisms to redistribute
the augmentation of productivity for all; and shares the burdens, making sure
that AI does not increase inequality and no human is left behind. Solidarity as
an AI principle (2) assesses the long term implications before developing and
deploying AI systems so no groups of humans become irrelevant because of AI
systems. Considering solidarity as a core principle for AI development will
provide not just an human-centric but a more humanity-centric approach to AI.
