Dunbar’s Number, Belonging, and Why Growth Can Feel Lonely

The Sharon Francisco Show · Mar 5, 2026 · 8m

Have you ever noticed that as your business grows… things can start to feel lonelier?

Not because you’re doing it wrong.

But because you’re wired a certain way.

In this episode, Sharon explores Dunbar’s Number — the research by British anthropologist Robin Dunbar showing that humans can comfortably maintain around 150 meaningful relationships. Within that are layers:

• 5 deeply bonded relationships

• 15 trusted confidants

• 50 active social connections

• 150 meaningful contacts

Beyond that? Trust, energy, and connection begin to thin out.

In this episode we cover:

• What Dunbar’s Number…