Every time I leave the house or we go anywhere, there is a paranoia. We always have to watch for specific cars and specific signs that we're being photographed.
The central idea of string theory is quite straightforward. If you examine any piece of matter ever more finely, at first you'll find molecules, atoms, sub-atomic particles. Probe the smaller particles, you'll find something else, a tiny vibrating filament of energy, a little tiny vibrating string.