Who am I?

It is assumed that a persons self or I is determined by unique combination of a specific fertilizing a specific egg cell. A different sperm, or a different egg, and a different person is born. A unique combination of a specific sperm cell fertilizing a specific egg cell became you, another unique combination became the author of this text. All other combinations would have resulted in somebody else.

A typical male ejaculation consist of 100 to 500 million sperm cells. Futhermore, a typical male ejaculates a few thousand times over a lifetime, which adds up to a total production of several trillion sperm cells. The typical female is born with one or two million potential egg cells, of which a few hundred will mature into egg cells.

One book is an illustation of 1 million sperm cells, or about one percent of a typical ejaculation. 300 million sperms equates to 300 books identical to this book, each with 200 pages, each page representing 5000 sperm cells.