WHEN THE first draft of the DNA sequence that makes up the human genome was unveiled in 2000, America’s president on the time, Invoice Clinton, introduced that humankind was “studying the language with which God created life”. His evaluation was somewhat fast off the mark. For one factor, the total sequence wouldn’t be accomplished till 2022. For one more, whereas scientists can use sequencing instruments to learn DNA, and CRISPR expertise to make small edits, truly writing the genomic language has proved trickier.