一些人相信所有实物都遵循物理法则，如果你能指出什么是物理，电脑就能遵循这些法则，就可以在电脑上模拟生命。
Some people believe that all material matter follows the rules of physics, and if you can figure out what physics is, a computer can follow the rules and therefore you can simulate life in a computer.
所有这些使得“第二人生”变成了一个极速增长的经济体，如果你相信设在旧金山的游戏供应商林登实验室的数据的话。
All this transformed Second Life into an extremely fast-growing economy, if you believe the Numbers of Linden Lab, the service's San Francisco-based owner.
你认为外星人真地来得地球并且把人带走吗？如果不相信，人们为什么讲述这些故事呢？
Do you think aliens really come to the earth and take people away? If not, why do people tell these stories?
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