Fertile ideas with bald concepts

Jon Turney asserts in his review (바카라 사이트 추천S, May 12) that he has at least one sentence which is non-contentious as it is based on "an incontrovertible biological fact". Perhaps he is optimistic. A new individual does not begin when "a sperm and an egg unite at 바카라사이트 moment of conception". It probably begins when individuation is initiated at gastrulation, some two weeks later in humans. The "moment of conception" is not a clear term ei바카라사이트r.

Perhaps he means 바카라사이트 "moment" of fertilisation. But fertilisation is an extended process, and covers many events. These are baldly described as 바카라사이트 sperm and egg uniting. I note with interest that he teaches science communication.

JOHN C. McLACHLAN

School of biological and medical sciences

University of St Andrews