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Here are some things that decline with age: - Grip strength - Sperm count in men - Sperm quality in men - Fertility in women (even before menopause) - Skin

Here are some things that decline with age: - Grip strength - Sperm count in men - Sperm quality in men - Fertility in women (even before menopause) - Skin elasticity - Eyesight - Muscle definition - Aerobic capacity - Wound healing rate - Hair growth rate - Sleep quality & duration - Testosterone levels - Thermal adaption to changes in temperature It appears to me that every bodily system slowly degrades as you age. Care to site any scientific studies showing that intelligence does not decline with age? That is a surprising claim to make.

hawaiianbrah 10y ago
Yeah. This quora answer seems to cite some evidence to back up your implication: https://www.quora.com/Intelligence-and-Genetics-Can-does-IQ-change-over-time https://www.quora.com/Intelligence-and-Genetics-Can-does-IQ-...
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giardini 10y ago
sol_remmy says:>"It appears to me that every bodily system slowly degrades as you age. Care to site any scientific studies showing that intelligence does not decline with age? That is a surprising claim to make." Studies show that older people are smarter. Despite your apparent youth, I'm fairly certain you can find the relevant studies. https://en.wikipedia.org/wiki/Fluid_and_crystallized_intelligence https://en.wikipedia.org/wiki/Fluid_and_crystallized_intelli... : "In psychology, fluid and crystallized intelligence are factors of general intelligence, originally identified by Raymond Cattell." Fluid intelligence peaks around 18 years of age, then declines. Crystallized intelligence is your accumulation of knowledge and skill. It increases until age 65 then slowly declines.
- brlewis 10y ago
  Crystallized intelligence is your accumulation of knowledge and skill. It increases until age 65 then slowly declines. Readers should be careful not to interpret this as meaning you're washed up at age 66. It means you're still close to your peak.
tannhauser23 10y ago
Read the article? Goodenough credits his old age productivity to the fact that he's been able to think about the same problem for decades, and that he's been able to learn about different fields in sufficient depth that he can find new connections between them. All the stuff you mention, you can measure. How do you measure intelligence? The kind of intelligence/wisdom that leads to making new scientific discoveries? I will posit that raw intellectual horsepower might decline with age (and even then, what the hell is this thing and how would we measure it?), but it's also clear to me that decades of accumulated wisdom and study can increase the likelihood of making a new discovery.
erikpukinskis 10y ago
Intelligence is not a physical property, it's an information property. It's built out of time, not any physical stuff. It's software, not hardware. And increases in intelligence also increase the efficiency with which the agent gathers information... so even if the sensory bandwidth of the input devices is declining, the perceptual bandwidth can be increasing. Of course eventually you start running up against mechanical limits and you decline. But that peak is much later than the peak in sensory bandwidth.
_dps 10y ago
In intellectual and creative work, the mind is not just hardware but also software and data. It's entirely plausible that the software gets better fast enough (with the right life experiences) to dominate the hardware getting worse with age.
oh_sigh 10y ago
Even if the brain starts to decline, you still have the accumulated knowledge which takes a while to lose. If peak physical condition was correlated with peak intelligence, we would expect 17-18 year olds to be making major changes in our world

hawaiianbrah 10y ago

Yeah. This quora answer seems to cite some evidence to back up your implication: https://www.quora.com/Intelligence-and-Genetics-Can-does-IQ-change-over-time https://www.quora.com/Intelligence-and-Genetics-Can-does-IQ-...

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giardini 10y ago

sol_remmy says:>"It appears to me that every bodily system slowly degrades as you age. Care to site any scientific studies showing that intelligence does not decline with age? That is a surprising claim to make." Studies show that older people are smarter. Despite your apparent youth, I'm fairly certain you can find the relevant studies. https://en.wikipedia.org/wiki/Fluid_and_crystallized_intelligence https://en.wikipedia.org/wiki/Fluid_and_crystallized_intelli... : "In psychology, fluid and crystallized intelligence are factors of general intelligence, originally identified by Raymond Cattell." Fluid intelligence peaks around 18 years of age, then declines. Crystallized intelligence is your accumulation of knowledge and skill. It increases until age 65 then slowly declines.

brlewis 10y ago
Crystallized intelligence is your accumulation of knowledge and skill. It increases until age 65 then slowly declines. Readers should be careful not to interpret this as meaning you're washed up at age 66. It means you're still close to your peak.

tannhauser23 10y ago

Read the article? Goodenough credits his old age productivity to the fact that he's been able to think about the same problem for decades, and that he's been able to learn about different fields in sufficient depth that he can find new connections between them. All the stuff you mention, you can measure. How do you measure intelligence? The kind of intelligence/wisdom that leads to making new scientific discoveries? I will posit that raw intellectual horsepower might decline with age (and even then, what the hell is this thing and how would we measure it?), but it's also clear to me that decades of accumulated wisdom and study can increase the likelihood of making a new discovery.

erikpukinskis 10y ago

Intelligence is not a physical property, it's an information property. It's built out of time, not any physical stuff. It's software, not hardware. And increases in intelligence also increase the efficiency with which the agent gathers information... so even if the sensory bandwidth of the input devices is declining, the perceptual bandwidth can be increasing. Of course eventually you start running up against mechanical limits and you decline. But that peak is much later than the peak in sensory bandwidth.

_dps 10y ago

In intellectual and creative work, the mind is not just hardware but also software and data. It's entirely plausible that the software gets better fast enough (with the right life experiences) to dominate the hardware getting worse with age.

oh_sigh 10y ago

Even if the brain starts to decline, you still have the accumulated knowledge which takes a while to lose. If peak physical condition was correlated with peak intelligence, we would expect 17-18 year olds to be making major changes in our world