Physicists are grappling with how the increasing presence of AI will change the nature of their profession

Physicists are grappling with how the increasing presence of AI will change the nature of their profession

As the science fiction author publishes the latest novel in his Children of Time series, Children of Strife, he talks to Alison Flood about mantis shrimp, the pleasures of sci-fi and why empathy is so important in his writing

As the science fiction author publishes the latest novel in his Children of Time series, Children of Strife, he talks to Alison Flood about mantis shrimp, the pleasures of sci-fi and why empathy is so important in his writing

Are we evolving to be more stupid? Humans have a relatively high genetic mutation rate, which has been thought to be driving down our physical and mental fitness – but columnist Michael Le Page finds these mutations aren’t the health risk some make them out to be

Are we evolving to be more stupid? Humans have a relatively high genetic mutation rate, which has been thought to be driving down our physical and mental fitness – but columnist Michael Le Page finds these mutations aren’t the health risk some make them out to be

What is represented by the following?

KAURADTEUOKNG FUJ


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The warden at the Prison for Creative and Unusual Punishment places a high value on intelligence, believing that intelligent people should be integrated into society no matter what their past misdeeds. So, rather than hold parole hearings, the warden routinely subjects groups of his prisoners to tests of intelligence. If they pass, they are set free. If they fail, they are usually executed.

For this test, the warden will gather ten prisoners in the Rec Room (a much larger padded cell), blindfold them all, and put a hat on each of their heads. The hats can be one of ten different colors; red, orange, yellow, green, blue, purple, pink, brown, gray, black. There are enough hats of each color for it to be possible for all ten prisoners to have the same color hat, or for them to all have different hats, or any possible combination of colors. As the warden is the one responsible for selecting the hats, he can and will intentionally sabotage the prisoners with the colors he chooses.

Once all of the prisoners have a hat on their head, they may remove their blindfolds and look at each other to see what the other nine are wearing. However, they may not communicate in any way or otherwise do anything that would result in a prisoner learning their own hat color. Should this happen, the prisoners will fail the test.

After allowing the prisoners to look at each other, the warden will give each of them the opportunity to guess the color of their hat. If at least one prisoner guesses their color correctly, they will pass the test and be set free. If none of them guess correctly, they will fail the test.

As is standard conduct for the tests at the PCUP, the warden will give all prisoners involved one day to discuss strategy amongst each other. They have also been prompted with all of the details of the test as described above.

What strategy can the prisoners implement that guarantees their escape?


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Lisa paid a lot of money to get the Mona Lisa. A year later, the picture was destroyed. However, Lisa was not mad. Why?


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The Neanderthal population shrank during a cold spell around 75,000 years ago, and the loss of genetic diversity may have contributed to their eventual extinction

The Neanderthal population shrank during a cold spell around 75,000 years ago, and the loss of genetic diversity may have contributed to their eventual extinction

Since 2016, Antarctic sea ice extent has been declining sharply – now scientists are piecing together how strong winds and warm deep water have played a part in this abrupt transition

Since 2016, Antarctic sea ice extent has been declining sharply – now scientists are piecing together how strong winds and warm deep water have played a part in this abrupt transition

Do we all see the same red? Or feel joy and sadness alike? Mapping how our inner experiences relate to one another could finally reveal how physical processes in the brain give rise to consciousness

Do we all see the same red? Or feel joy and sadness alike? Mapping how our inner experiences relate to one another could finally reveal how physical processes in the brain give rise to consciousness

Catching a comet in the process of falling apart is difficult, but a coincidence let astronomers see one in more detail than ever before using the Hubble Space Telescope – and revealed a mystery

Catching a comet in the process of falling apart is difficult, but a coincidence let astronomers see one in more detail than ever before using the Hubble Space Telescope – and revealed a mystery

Researchers have created the first living synthetic bacterium made from non-living parts by killing a bacterial cell and then transplanting the genome of another species into it, blurring the boundary between life and death

Researchers have created the first living synthetic bacterium made from non-living parts by killing a bacterial cell and then transplanting the genome of another species into it, blurring the boundary between life and death

Researchers identified nearly 10,000 websites where API keys could be found, exposing details that could let attackers access sensitive information