The invisible man (or woman)

THIS IS WRITTEN IN INVISIBLE INK (unless my photons have taken the wrong tunnel again)

Of course there are moments in life that invisibility would "suit" us all or that a carpet for cloacking as Harry Potter was using , would be a most welcome asset. Fact or fantasy. Well some work has already been done. Read about it in the latest jan issue of Nature and you will understand my motto "all I know I learned from Star Trek".