Of Newton's Three Laws, the First Law stands out to me: "Objects at rest remain at rest, and objects in motion remain in motion in a straight line at constant velocity. A force must be applied to change the state of motion of an object." This makes me think of habits, which have a tendency to continue at the same manner, unless the force of willpower is applied to change the habit from its usual course. The amount of willpower needed to make the change depends on how substantial and sustaining the habit is.
When I think of "energy efficiency" in our culture, I think of the concept of carbon footprint. For example, it can be debated to whether buying local produce or imported produce is more energy efficient. Often the conclusion is that local produce is more energy efficient. However the real calculation depends on the total resources needed to grow the produce locally versus the total resources needed to grow the produce abroad plus the resources required to transport the produce.
Descartes said "I think therefore I am". But what, really, am "I"? Our perception is subjective and the way we see things creates what we know as reality. I think the realization that our perception is subjective opens us to other perspectives and helps us to see things objectively. Reality is great enough to contain multiple truths, and our perspective is only one truth.
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