There are times I feel I am in a science fiction movie existing in a strange dystopia where engineered bodies move seamlessly with humanoids.  I first became aware of this emerging reality when I watched a 3D printing machine creating scaled down versions of people at a stand in  a vast German exhibition hall.  Perhaps it was the Hanover Fair, I can't recall exactly - as a science writer I attend many such shows.  At the time I thought I would quite like a scaled down version of me for the office desk but they were charging several hundred euros...