Encyclopedia > I > If a tree falls in a forest
If a tree falls in a forest
If a tree falls in a forest and no one is around to hear it, does it make a sound? This popular riddle appears often in pop culture, and raises many difficult questions regarding perception, observation, and our knowledge of reality.
Information are taken from Wikipedia, the open encyclopedia, to which contribute many volunteers from around the whole world. Texts are available under the following conditions GNU Free Documentation License.
Encyklopedie (cz) Encyklopédia (sk) Enzyklopädie (de)