Editing 2041: Frontiers
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Outer '''space''' is so vast in size that it’s impossible for humans to discover even just the stars in our galaxy within a lifetime, as astronomers estimate that there are 100 to 400 billion stars in the {{w|Milky Way}}. Space travel is also very difficult and expensive. | Outer '''space''' is so vast in size that it’s impossible for humans to discover even just the stars in our galaxy within a lifetime, as astronomers estimate that there are 100 to 400 billion stars in the {{w|Milky Way}}. Space travel is also very difficult and expensive. | ||
− | '''The oceans''' are very deep. The vast majority of the deeper oceans hasn’t been visited by humans, and there is still much we don’t know about the living beings in the deep sea. Around 95% of the oceans haven't been explored and mapped by humans.{{ | + | '''The oceans''' are very deep. The vast majority of the deeper oceans hasn’t been visited by humans, and there is still much we don’t know about the living beings in the deep sea. Around 95% of the oceans haven't been explored and mapped by humans.{{citation needed}} |
'''The human mind''' is not only very complex, but also often seems irrational, which makes it harder to investigate. Its relation to the brain is also somewhat mysterious: {{w|philosophy of mind}} is split on whether the mind is ultimately material (materialism) or immaterial (dualism/idealism). Further, certain philosophical systems have trouble explaining its relation to the body, in what is termed the {{w|mind–body problem}}. | '''The human mind''' is not only very complex, but also often seems irrational, which makes it harder to investigate. Its relation to the brain is also somewhat mysterious: {{w|philosophy of mind}} is split on whether the mind is ultimately material (materialism) or immaterial (dualism/idealism). Further, certain philosophical systems have trouble explaining its relation to the body, in what is termed the {{w|mind–body problem}}. |