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The Arrow of Time
In Stephen Hawking's book, A Brief History of Time, he talks about the thermodynamic, psychological and cosmological arrows of time, and how they're interconnected.
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The thermodynamic and psychological arrows increase in the same forward direction of time. What does this mean?
As per thermodynamics, we only observe disorder, i.e. a metric of entropy, to increase over time since there exist many more disordered states than those of higher order.
And w.r.t the psychological arrow, there's a given fact that as time passes, we only remember the past and not the future.
https://www.youtube.com/watch?v=AZsmyTE3j9o
The cosmological arrows also increase with time. As energy is spent in bringing a system from disorder to a higher order, the amount of energy dispelled into the universe, i.e entropy, also increases.
What does this mean for our conceptions of time and space? That as time passes by, the universe shall keep expanding? That all that matters will keep getting torn apart?
Our natural states are more of disorder than they are of order. The thermodynamic and cosmological laws of science say so.
If we're keeping something in order, it means we're spending a tremendous amount of energy to do so, which goes against its natural state of just becoming more disorderly over time.
And regardless, the amount of entropy in the universe keeps increasing.
For example, the global warming of the Earth; of course, in our attempts to control the resources of the world, we're simply pumping more disorder into the universe. This too is an expected outcome, however, since the disorder is meant to increase with time anyway.
Maybe this has something to do with our futures; if systems initially in a higher order are more probable to be in a disordered state later in time, and if we're only meant to remember the past and not the future,
maybe it means that we're only meant to remember the nature of the higher order state in order to reconstruct it again and again.
In the grand scheme of things, the totall entropy still increases with each activity we undertake to control it. However, this evens our odds by placing us as the ideal counter against disorder.
We're probably the most probable to maintain the highest order during our limited time, a speck of certainty in an ocean that keeps getting growing wider, and wilder than the previous moment.
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It's not the expansion of the universe that makes disorder increase. Rather, it's the 'no boundary' condition that causes disorder to increase and the conditions to be suitable for intelligent life only in the expanding phase.