What a Picture of a Dog Has to Do with Reason and Logic

Two Estonian philosophers argue that people with aphantasia, a condition where someone cannot form mental images, disprove philosopher David Hume's 300-year-old claim that abstract thought requires mental pictures. Since aphantasics handle concepts like justice or algebra without any imagery, the tight link between imagination and abstract thinking breaks down. This suggests human cognition is more varied than Hume believed, with different people achieving the same thinking through different mental processes.