>While this is true, there are billions of convenient examples everybody knows.
Well, in those days they had a billion less examples than we have today - or at least tens of thousands of common today product categories and things not yet existing.
But they also used weaponry (Zeno on infinite division), chariots (Plato on soul), pots (Plato on art), caves (Plato on reality), dice (Heraclitus on chance), and many other things.
Plus, famous examples tend to be re-invoked (same how computer vision students re-used Lena).
Both are fair points. Still, a table - or chair - is/was one of thousands of options to choose. So you might be right that good examples tend to be reproduced. Question remains why it would be a good example to begin with.
Personally I think at some point such choice became baked in into the concept of physical existence because people think in pictures and physical existence in itself is such an abstract thing. The choice of furniture however is kind of hilarious.
Well, in those days they had a billion less examples than we have today - or at least tens of thousands of common today product categories and things not yet existing.
But they also used weaponry (Zeno on infinite division), chariots (Plato on soul), pots (Plato on art), caves (Plato on reality), dice (Heraclitus on chance), and many other things.
Plus, famous examples tend to be re-invoked (same how computer vision students re-used Lena).