strong anthropic principle

The strong anthropic principle is a concept in cosmology stating that the universe must have properties that inevitably lead to the existence of intelligent life. This principle suggests that the universe's conditions are not accidental but are fundamentally structured to allow for observers.123

For example, the precise values of fundamental constants, such as the strength of gravity or the mass of an electron, appear to be finely tuned. If these values were even slightly different, complex life as we know it might not be possible. The strong anthropic principle posits that this fine-tuning is a necessary feature of the universe, ensuring life's emergence.3