I find this image frightening and fascinating...this is a T4 bacteriophage, a virus which infects E.coli. Why is that impressive? Well, look at it! Before this alien lander touched down on this cell, it was a virion, a completely static entity, an inert device in the “off” position. Once the legs contact the ‘active sites’, it logically activates, just like a space probe; it ‘switched on’. What it does then is insidious.