[h1=引言]“The lonely assassins, they used to call them - no one quite knows where they came from but they're as old as the universe, or very nearly. And they've survived this long because they have the most perfect defence system ever evolved. They're quantum locked. The moment they are seen or observed by any other living creature they freeze into rock - no choice, a fact of their biology. In the sight of any living thing, they l...