President Joe Biden made an irrational statement the other day about when human life begins, saying at a press conference:
I respect those who believe life begins at the moment of conception. I don’t agree, but I respect that. I’m not going to impose that on people.
Except this is not a question of “belief,” but one of biological fact. It’s a question about which science–rather than politics or ideology–has long known the answer. Indeed, embryology text books are clear on that point. For example (my emphasis):
Human development is a continuous process that begins when an oocyte (ovum) from a female is fertilized by a sperm (or spermatozoon) from a male. (p. 2); … but the embryo begins to develop as soon as the oocyte is fertilized. (p. 2); … Human development begins at fertilization, the process during which a male gamete or sperm … unites with a female gamete or oocyte … to form a single cell. This higly specialized, titipotent cell marks the beginning of each of us as a unique individual.
Keith Moore and T.V.N. Persaud, The Developing Human: Clinically Oriented Embryology (6th ed.) p. 18
Here’s another useful quote from another embryology textbook:
Although life is a continuous process, fertilization…is a critical landmark because, under ordinary circumstances, a new, genetically distinct human organism is formed...
Ronan O’Rahilly and Fabiola Muller, Human Embryology & Teratology, 3rd ed.
“A genetiucally distinct organism” is a technical way of saying that “a human life begins at conception” (when that organism is a member of the species Homo sapiens).
What the heck, one more:
“Zygote. This cell results from the union of an oocyte and a sperm during fertilization. A zygote is the beginning of a new human being.
Moore, Keith L. and Persaud, T.V.N. The Developing Human: Clinically Oriented Embryology. 7th edition.
In other words, Joe Biden’s life began when he came into being after conception as a one-celled human being–whether he “believes” it or not....