In principle, any piece of simple dead matter in the universe could give rise to simple life, then to advanced life, then to an expanding visible civilization. In practice, however, this has not yet happened anywhere in the visible universe. The “great filter” is sum total of all the obstacles that prevent this transition, and our observation of a dead universe tells us that this filter must be enormous.
Two Types of Future Filters
Two Types of Future Filters
Two Types of Future Filters
In principle, any piece of simple dead matter in the universe could give rise to simple life, then to advanced life, then to an expanding visible civilization. In practice, however, this has not yet happened anywhere in the visible universe. The “great filter” is sum total of all the obstacles that prevent this transition, and our observation of a dead universe tells us that this filter must be enormous.
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