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How Could We Be So Wrong About Atoms, Light, and Time?

Our over-simplified conception of reality is probably all that our tiny little brains can manage.

ScottCDunn
5 min readSep 14, 2022

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My brain is no match for the universe. In terms of processing power, memory, and accuracy, it’s not even close. The universe will win every time. I like to think that I live in a universal processor. Everything is information. My mind is always asking the question: how accurate do my senses need to be for me to survive?

Consider our pop culture concept of the atom. In the picture below, we see a very common illustration of what an atom looks like:

A model of a lithium atom from Wikimedia

The proportions above are all wrong. Atoms consist of almost entirely empty space. If that nucleus were the size of a basketball, the electrons could most likely be found about 2 miles away.

Notice that I stated the position of the electrons as a probability, not a certainty. That’s because reality can at best be described as a set of probabilities. the reality of our existence is that nothing is 100% certain.

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