Technology has a strange way of propagating itself into everyday life. Science, technology and biology all play a role in making human life last longer and the person who will live more than 150 years has already been born (ref). Children don't understand life or death nor they are particularly interested in it. Toys live forever, sometimes switch sex, get ill, die or reborn. Play is an educational methodology and since our children are becoming increasingly aware of the machine world we inhabit, they are also interested in machines that keep us alive - or sometimes not.