Hubris and lack of imagination have repeatedly caused us humans to underestimate the vastness of the physical world. Dismissing things
merely because we cannot observe them from our vantage point is reminiscent of the ostrich with its head in the sand.
A fish never leaving the ocean might mistakenly conclude that the properties
of water are universal, not realizing that there is also
ice and steam. We may be smarter than fish, but could
be similarly fooled: cosmological inflation has the deceptive
property of stretching a small patch of space in
a particular phase so that it fills our entire observable
universe, potentially tricking us into misinterpreting what we see is ‘it’
the Universe.
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