Manel: I'm really interested to know how the pairs of people reacted with their doppelgangers. How did they react to finding they even shared DNA? Manel: People when they connect, they like each other because they're liking themselves at the end. And this can be useful in the screening of genetic disorders. For example, you can say this person may be she or she has a genetic disease and we can intercept the disorder before it has a clinical phenotype. So we can do some kind of preventive genetics medicine.