People Who Can't Visualize Anything Are Challenging a 300-Year-Old Theory of Thought

Researchers are challenging the 300-year-old philosophical theory that abstract thought requires mental imagery. The study focuses on aphantasia, a condition where individuals cannot form mental images, yet still possess the ability to reason and understand complex concepts.
The philosopher David Hume believed that, to understand abstract concepts, humans needed to summon a mental image to picture the idea. But since Hume’s time in the 18th century, we now have a more nuanced understanding of the human brain’s complexity—and our philosophy might be due for some upgrades, according to a new study.
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