Can we "enhance" humans by means of customized genes ?

I've preferred to leave the verb "enhance" in inverted commas, because geneticists are frankly playing at behaving as a divinity, and nobody knows with certainty yet whether these scientists are God or the Devil. Or maybe a bit of both. Consequently, many observers consider that it's still too early to say whether or not we have the right to perform so-called human gene editing.

A conference on these questions took place in Washington on December 1–3, sponsored by Britain’s Royal Society, the Chinese Academy of Sciences and the US National Academies. Click here for a Scientific American website on this subject.

In my recent blog post about the French scientist Emmanuelle Charpentier [display], I mentioned a celebrated method known as the CRISPR–Cas9 system, for which she was a contributor. This technology has made DNA modification so simple that amateur biologists working in home laboratories are starting to fiddle with it, and to "hack genomes". Not surprisingly, the CRISPR-Cas9 method appears to have played a central role in the Washington conference.