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The best consumer companies incorporate both virality and network effect to grow organically.
- Network effects are defined by Metcalfe's Law, where a network's value scales according to the square of its number of nodes.
- This mathematical relationship implies that increasing the user count exponentially enhances the utility of the product for every individual participant.
- WhatsApp serves as the primary exemplar of this dynamic, illustrating the transition from zero value with a single user to high utility as the network expands.
- The platform's value proposition relies on the ability to communicate globally for free, which only becomes viable as the user base grows.
- Consumer companies achieve organic growth by integrating both virality and network effects, despite them being distinct conceptual mechanisms.