The Egocentric Blind Spot
Paradoxes that trick us by making us focus on our personal perspective rather than the entire network.
The Birthday Paradox
The Birthday Paradox (or Birthday problem) is the counterintuitive fact that in a group of just 23 people, there’s already about a 50% chance that two share a birthday. It happens because you’re comparing many possible pairs, not just one person against everyone else. Explore the probabilities as the number of people in the room changes. Toggle the switch to see the difference between Paradox "Any Match" and matching "YOUR Birthday Match".
Compare "My Specific Birthday"
Further reading: Birthday Problem on Wikipedia.