Читать книгу Geekspeak: Why Life + Mathematics = Happiness - Graham Tattersall - Страница 14

COUNTING FRIENDS OF FRIENDS, THERE ARE OVER A THOUSAND PEOPLE IN YOUR SOCIAL CIRCLE.

A typical person has 30 to 50 people they consider to be close friends or acquaintances. We could take an average of 40 for the purpose of calculation. If each of these friends has a further 40 friends, excluding you and your shared acquaintances, there will be approximately 40 × 40 people in your social circle. That’s 1,600 people. If you count friends of friends of friends, the number rises to 64,000.

You’d spend a lot of time writing Christmas cards.