Anthropic reasoning is two-legged
The form of weak anthropic reasoning used here is not tautological since, as well as noting that low entropy is necessary for life and therefore observers can only see low entropy, it offers several mechanisms or processes that could give rise to the (extremely improbable) low entropy state.
CONTEXT(Help)
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The Arrow of Time  »The Arrow of Time 
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The physics of time »The physics of time
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The thermodynamic arrow »The thermodynamic arrow
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Why do we see an entropy gradient? »Why do we see an entropy gradient?
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Asymmetric boundary condition »Asymmetric boundary condition
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Past hypothesis »Past hypothesis
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Why low entropy in the past? »Why low entropy in the past?
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Anthropic selection »Anthropic selection
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Weak Anthropic Principle is tautological »Weak Anthropic Principle is tautological
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Anthropic reasoning is two-legged
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