The predator bluff
Goosebumps are an evolutionary vestige designed to intimidate enemies. In our distant ancestors, small muscles contracted when sensing danger, raising fur to make the animal appear larger and more formidable.
Now, this reaction, governed by the limbic system, is completely useless. It simply leaves bumps on smooth skin, betraying our fear instead of saving us from predators.
#anatomy #evolution #vestigial
Goosebumps are an evolutionary vestige designed to intimidate enemies. In our distant ancestors, small muscles contracted when sensing danger, raising fur to make the animal appear larger and more formidable.
We lost our thick fur but kept the ancient reflex of "puffing up" when faced with a threat.
Now, this reaction, governed by the limbic system, is completely useless. It simply leaves bumps on smooth skin, betraying our fear instead of saving us from predators.
#anatomy #evolution #vestigial
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Badges as a brand of identification
The system of mandatory identification badges has its roots in institutions of total control: colonies and labor camps. It was a way to dehumanize a person, turning them into a serial number for the convenience of guards.
Now, a plastic card on the chest is considered a sign of professionalism and corporate belonging. We proudly wear something that was originally created for unification and surveillance.
#corporateculture #history #sociology
The system of mandatory identification badges has its roots in institutions of total control: colonies and labor camps. It was a way to dehumanize a person, turning them into a serial number for the convenience of guards.
Now, a plastic card on the chest is considered a sign of professionalism and corporate belonging. We proudly wear something that was originally created for unification and surveillance.
#corporateculture #history #sociology
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Your navigator lives in the future
GPS satellites are located further from Earth where gravity is weaker, and they move at high speeds. Because of this, their onboard clocks run 38 microseconds faster per day compared to clocks on the planet's surface.
Engineers must constantly correct the time in orbit so that maps on your smartphone show the right path. We use the results of spacetime curvature every time we order a taxi.
#space #physics #time
GPS satellites are located further from Earth where gravity is weaker, and they move at high speeds. Because of this, their onboard clocks run 38 microseconds faster per day compared to clocks on the planet's surface.
Without accounting for the theory of relativity, Google Maps would be off by 10 kilometers within a day.
Engineers must constantly correct the time in orbit so that maps on your smartphone show the right path. We use the results of spacetime curvature every time we order a taxi.
#space #physics #time
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Spotlight effect
Students were forced to wear a ridiculous singer t-shirt. Participants were sure half the audience stared at them, but real figures showed: the portrait was noticed by only two out of ten. We think everyone watches us. 👕👀🙈
#psychology #experiment #society
Students were forced to wear a ridiculous singer t-shirt. Participants were sure half the audience stared at them, but real figures showed: the portrait was noticed by only two out of ten. We think everyone watches us. 👕👀🙈
#psychology #experiment #society
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