Saturday, August 10, 2019

Philosophy Wire: DNA. Mosaics. Life.

We’re accustomed to thinking of our cells sharing an identical set of genes, faithfully copied ever since we were mere fertilized eggs. When we talk about our genome — all the DNA in our cells — we speak in the singular. But over the course of decades, it has become clear that the genome doesn’t just vary from person to person. It also varies from cell to cell. The condition is not uncommon: We are all mosaics. [1] All data point into the same direction. We are not we. There is no I. There is no self. Unless we think so. Do you feel you today? Wake up. Drink your milk. Go to work. You just destroyed a universe.

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