Single Idea 4665

[catalogued under 25. Social Practice / F. Life Issues / 3. Abortion]

Full Idea

It is suggested that conception cannot be the boundary for the beginning of a genetic person, because monozygotic twins can split at any time during the first two weeks.

Gist of Idea

Conception isn't the fixed boundary for a person's beginning, because twins are possible within two weeks


Jonathan Glover (Causing Death and Saving Lives [1977], 9.3)

Book Reference

Glover,Jonathan: 'Causing Death and Saving Lives' [Penguin 1982], p.123

A Reaction

Interesting, but not convincing. If I suddenly learned that I could fission into twins tomorrow, I would be no less of a single person today.