(The manager of BioArt Fertility Clinics lab prepares thawed blastocysts during an in-vitro fertilisation process in Johannesburg, on February 22, 2022. (Photo by LUCA SOLA / AFP) (Photo by LUCA SOLA/AFP via Getty Images)

I was once at a conference on gene-editing and was urging the need to keep some legal prohibitions in place. In response one participant said that rather than a red light for stop we should have an amber light to proceed slowly. However, a third participant disagreed even with that. “When I see an amber light”, she said, “I always speed up!”