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"Twinkle, twinkle, quasi-star Biggest puzzle from afar How unlike the other ones Brighter than a billion suns Twinkle, twinkle, quasi-star How I wonder what you are." -George Gamow

"The specific moral is that within the standard model the [cosmic microwave background] temperature is a key parameter in fixing the thermal and dynamical history of the Universe. The measurement of this parameter made physical cosmology much more definite, and the detection of the radiation made the Big Bang cosmology a good deal more credible." -P.J.E. Peebles

"It took less than an hour to make the atoms, a few hundred million years to make the stars and planets, but five billion years to make man!" -George Gamow

Is it groupthink? Or is there a deeper reason?