 But the view that the sequence of ‘the’ human genome was the key output is wrong in several ways. First of all there is in general no such thing as ‘the’ human genome, as each individual (except for monozygotic twins) carries their own set of small and large variations in their genome (and even for twins there are many differences they accumulate in their genomes during their lifetime). The sequence that was produced in the HGP is therefore nothing more than an example of one particular sequence, meaning it can only serve as a reference genome. Importantly, the reference sequences that both the HGP and Venter’s project delivered did not correspond to the genome of a single person as the DNA used to produce them was derived from several  individuals.[9]  The genomes that came out of the two sequencing efforts were therefore composite reference sequences. But the HGP also produced much more than just a DNA sequence. Here we will highlight three outcomes or aspects of the HGP that are of particular importance, also for the period that followed the completion of the project.