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Artefacts such as bows and arrows do not necessarily prove our ancestors had sophisticated reasoning and understanding of how these tools worked, new research suggests.

Instead, such items could have emerged from an “accumulation of improvements made across generations” – with each generation understanding no more than the last.

The new study, by the University of Exeter and the Catholic University of Lille, does not question humanity’s capacity for “enhanced causal reasoning” – but argues this did not necessarily drive the development of technologies such as bows, boats and houses. (1)

Blessed we are.

Through aeons of life.

We manage to die.

Creating nothing.

At the end, all will perish.

Are you afraid to smile?