Have you ever stopped to consider that what you see might not actually be what is? Our brains are complex, extraordinary machines, with more neural connections than there are stars in the galaxy. And yet, despite that immense capacity, our perception of reality is far from perfect. In fact, it’s an illusion—crafted by our brains to help us function, not necessarily to help us understand.
Optical illusions are more than just cool party tricks—they’re windows into how our brains interpret the world. What we see is not always what’s there. That’s because our neurons are busy converting information from the outside world into electrochemical signals the brain can process. But not all signals make it through—only the strongest survive. Weaker ones get “stomped out,” filtered as irrelevant or unnecessary.
Our eyes may be high-tech, but they’re not omnipotent. Human vision is sharpest in a small central area, and the brain fills in the blurry edges with its best guess. If we wanted to see everything in 20/20 clarity, our brains would need to be 60 times bigger—and that’s just not energy-efficient.
Instead, the brain makes assumptions. It takes shortcuts. It predicts. That’s why color isn’t a fixed property of objects—it’s an interpretation the brain constructs based on usefulness. What you see isn’t necessarily real—it’s just real enough to get by.
Here’s a wild thought: the brain doesn’t care about being accurate—it cares about being useful.
Our perceptions evolve not to reflect objective reality, but to help us navigate and survive it.
That’s why illusions, while technically false, often help us process real-world information faster.
And it’s not just about vision. Our memories, too, are surprisingly flexible. The more we recall a memory, the more distorted it becomes. Unlike digital files, memories are analog—they degrade, morph, and bend with time and retelling.
Despite their analog quirks, our brains have some digital-like traits too. They process inputs, filter signals, and optimize for performance. But this processing power comes at a cost: about 20% of all the calories we consume go to the brain. For toddlers, it’s even more—up to 60%! That’s a lot of fuel for thought.
Even the way different species see the world highlights how vision is customized for function. Humans have rods and cones in their eyes—cones detect color, rods detect light. Dogs have more rods than cones, giving them superior night vision but duller colors. Birds? They’ve taken it up a notch with an extra type of cone, allowing them to see colors beyond our human grasp.
Ultimately, what we experience as consciousness—our awareness of the world—is just the brain’s best guess, stitched together from sensory input, memory, and prediction. It’s not reality—it’s a story. But it’s our story.
And maybe, just maybe, that’s all we really need.
This post was created using ChatGPT-4o
First Prompt 4/14/25
Can you take these bullet points and create a blog post…
“- More neural connections in the brain than stars in the galaxy
– Illusions reveal the way we perceive things, however that isn’t necessarily the way they are
– Neurons transport input from the world into electrochemical signals
– Weaker signals get stomped out
– Brain makes assumptions for peripheral vision
– Brain would have to be 60 times bigger if you wanted to see everything 20/20
– We don’t have enough “processing power” in our brains to see everything
– Color is an interpretation of the brain
– We see color based on what’s useful to us
– Everyone is different on the inside
– Brain fills in uncertainty with best guess
– Not brains job to see the world accurately, just tries to predict what’s next
– Not about how accurate perceptions are, but how useful they are
– Awareness/Experience of the world is what we know as conciseness
– Illusions we perceive as reality make us faster at processing reality
– The brain uses about 20% of all calories
– A 2 year old brain uses 60% of all calories
– Our brains have digital characteristics
– Our memories don’t always encompass reality
– The more we recall a memeory, the less objectively accurate it becomes
– Memories can be considered analog
– Human eyes have rods and cones within them
– Dogs have more rods than cones in their eyes
– Birds have extra type of cone to see more colors “