Follow your curiosity

What discovery has been shared with you?

FACTREE gives you something interesting to discover every day — and something worth talking about together.

Start with one fact. Explore it, go deeper, then follow whichever branch catches your imagination.

Choose subjects for a surprise

Exploring any topic

Begin your discovery

Your next discovery is one click away.

Choose one or more subjects above, or leave Any Topic selected and let curiosity decide.

Philosophy

The Mereological Fallacy: Parts, Wholes, and Mental Predicates

Quick fact

The term 'mereological' comes from the Greek 'meros,' meaning 'part.' The fallacy was famously diagnosed by philosophers like Bennett and Hacker in their critique of neuroscience.

Why this is interesting

We often say 'my brain made me do it'—but can the brain really 'think' or 'decide'? This seemingly harmless phrase hides a logical error that philosophers have been warning about for centuries.