Ninjutsu, or Shinobi Jutsu involves Inton Jutsu (escape and concealment):
"More impressive than this is that they've built this cloak out of calcite, an ordinary and relatively cheap optical material, using conventional optical lens fabrication techniques. This makes the cloak cheap and easy to build.
"Carpet cloaks sit on a surface covering the object to be hidden. Their trick is to make it look as if light is reflecting off this surface, thereby hiding any object that they cover.
Physics arXiv blog: Invisibility Cloak Hides Objects Visible To The Naked Eye, there's also a discussion on the same page regarding the following:
"There's something exciting afoot in the world of cosmology. Last month, Roger Penrose at the University of Oxford and Vahe Gurzadyan at Yerevan State University in Armenia announced that they had found patterns of concentric circles in the cosmic microwave background, the echo of the Big Bang.
"This, they say, is exactly what you'd expect if the universe were eternally cyclical. By that, they mean that each cycle ends with a big bang that starts the next cycle. In this model, the universe is a kind of cosmic Russian Doll, with all previous universes contained within the current one.
"That's an extraordinary discovery: evidence of something that occurred before the (conventional) Big Bang.
"Today, another group says they've found something else in the echo of the Big Bang. These guys start with a different model of the universe called eternal inflation. In this way of thinking, the universe we see is merely a bubble in a much larger cosmos. This cosmos is filled with other bubbles, all of which are other universes where the laws of physics may be dramatically different to ours."
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