As Alexander could not attack the city from the sea, he built a kilometre-long two hundred foot-wide causeway (claimed so by Diodorus) stretching out to the island on a natural land bridge no more than two meters deep.
Holograms are capable of encoding so much detail that, for example, it is possible to take a holographic projection of a glass of swamp water and view it under magnification to see small organisms not visible to the naked eye when the glass of water itself is examined.