One Child

The anthropic principle says that we shouldn&rsquo;t be surprised by necessary conditions for our existence, because of selection bias: if the conditions weren&rsquo;t met, we wouldn&rsquo;t be around to be surprised. The most famous example comes from cosmology, couertesy of Fred Hoyle. In 1952, the only known way of getting elements heavier than Lithium was through stellar nucleosynthesis.…