We've Been Testing For Consciousness Wrong [21:29] (www.youtube.com)

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Professor Masanori Kohda has been studying fish for 3 decades. His groundbreaking paper in 2019 showed that fish are capable of passing the famous mirror test. But more importantly, his research shows that how we have tried to test for consciousness over the past half century may be wrong.

In this video, we look at how he came to these conclusions.

The 2019 study: If a fish can pass the mark test, what are the implications for consciousness and self-awareness testing in animals?

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this post was submitted on 25 May 2026

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Biodiversity

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Biodiversity is a term used to describe the enormous variety of life on Earth. It can be used more specifically to refer to all of the species in one region or ecosystem. Biodiversity refers to every living thing, including plants, bacteria, animals, and humans. Scientists have estimated that there are around 8.7 million species of plants and animals in existence. However, only around 1.2 million species have been identified and described so far, most of which are insects. This means that millions of other organisms remain a complete mystery.

Over generations, all of the species that are currently alive today have evolved unique traits that make them distinct from other species. These differences are what scientists use to tell one species from another. Organisms that have evolved to be so different from one another that they can no longer reproduce with each other are considered different species. All organisms that can reproduce with each other fall into one species. Read more...

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