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But if our superficial review is correct, we can say that quantum mechanics will not obviate our need for a Past Hypothesis though it may well solve (on a GRW interpretation) at least one problem related to the direction of time.
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What's more, in the decades that followed, new discoveries suggested that there might be an explanation for the past hypothesis after all.
But perhaps we were wrong in the first place to think of the Past Hypothesis as a contingent boundary condition.
He argues that the temporal asymmetries follow from the Past Hypothesis (already mentioned), a uniform probability distribution over this macrostate in the appropriate state space), and the dynamical laws of motion.
This is neat, but it raises a whole new question: why is the past hypothesis true?
Alternatively it might be argued that physics does supply a real direction — perhaps via Albert's "Past Hypothesis" (Albert 2000, Loewer 2007, Kutach 2007) — but one that is only contingently connected to the direction of time.
Albert introduces an alternative postulate, essentially providing transition probabilities between two macrostates conditional on the so-called Past Hypothesis, the posit that the universe came into existence in a low entropy state (the Big Bang).
The past hypothesis explains something surprising about the regularities we observe; by contrast, a world with random sequences of outcomes is exactly what we should expect a priori if all we knew was which states were possible states.
This seemed to support the past hypothesis.
This does not mean, however, that it removes the need for something like the Past Hypothesis.
The one that worked best came to be known as the past hypothesis.
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Since I tried Ludwig back in 2017, I have been constantly using it in both editing and translation. Ever since, I suggest it to my translators at ProSciEditing.

Justyna Jupowicz-Kozak
CEO of Professional Science Editing for Scientists @ prosciediting.com