Brains are lazy. They are quick to guess, and they “check” the guess as lazily as possible.
More accurately; brains need to be as fast as possible while using as little energy as possible, so we can out-compete everything else and not get killed – same as all life. That’s what makes you successful; use the minimum resources to get what you need. Which is why life takes short-cuts – as long as they work more often than not…
It applies to all levels of things; from your example, to people more readily believing things they already know more than anything new to them – regardless of reality.
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