Mammals dream about the world they are about to experience before they are born

Post by shard » Tue, Jul 27, 2021, 1:02 PM UTC

agent008t wrote: post #135

Nition wrote: post #124

Earlier quoted context omitted.

I'm going by average weight gain from normal growth. But let's look at height instead then. Average height at age 12: 59". At age 13: 62". 3" of growth. At birth: 19". At one year: 29". 11" of growth. Try matching that just by eating more. (obviously, yes, it's easier for a small thing to grow than a large thing. But it's still crazy fast. Imagine being 50% taller in a year)

You talked about weight gain, in absolute terms. A novice powerlifter can easily put on both more absolute weight and absolute strength in a year than a newborn.

Post by pedrosorio » Tue, Jul 27, 2021, 1:19 PM UTC

ljf wrote: post #120

agent008t wrote: post #111

Earlier quoted context omitted.

Putting on 6kg in a year is not that fast, people do sometimes gain weight faster than that in adulthood.

But putting on 100% or even 200% of weight in a year is not normal or even possible for most adults without crippling their health. All babies do this.

Post by dexen » Tue, Jul 27, 2021, 1:30 PM UTC

gojomo wrote: post #12

Something about this reminds me of the 'Winning Ticket Hypothesis' in artifical neural networks: that some 'random' initializations prime a network far better for later faster learning. From https://arxiv.org/abs/1803.03635 - the abstract: Neural network pruning techniques can reduce the parameter counts of trained networks by over 90%, decreasing storage requirements and improving computational performance of infere…

  In the days when Sussman was a novice Minsky once came to him as he sat
  hacking at the PDP-6.  "What are you doing?", asked Minsky.  "I am
  training a randomly wired neural net to play Tic-Tac-Toe."  "Why is the
  net wired randomly?", asked Minsky.  "I do not want it to have any
  preconceptions of how to play." Minsky shut his eyes.  "Why do you
  close your eyes?", Sussman asked his teacher.  "So the room will be
  empty."  At that moment, Sussman was enlightened.

Post by davchana » Tue, Jul 27, 2021, 1:45 PM UTC

jacobolus wrote: post #98

danielheath wrote: post #76

Earlier quoted context omitted.

I’ve seen a 2mo with the leg strength required. If you balanced them they would hold themselves up, no problem. The balance comes much later than the strength.

The balance can also be trained relatively quickly, but newborns typically get very little practice. If you start occasionally holding your baby up by the thighs when they are 4–5 months old (their back/abdomen muscles at that point are typically plenty strong), after about a month they will have the balance to hold their torso upright when sitting on an adult’s shoulders, for at least a while. By age 8–9 months they…

Post by l33t2328 » Tue, Jul 27, 2021, 2:17 PM UTC

jacinda wrote: post #70

teruakohatu wrote: post #17

Earlier quoted context omitted.

> Are these innate patterns of activity priming mammalian brains in a similar way? A newborn foal can stand within 55 minutes of being born and can walk or run within 90 minutes. That is crazy fast training speed. Is it training initialization or is it a form of transfer learning? Most human babies take 9-18 months to walk, and this is commonly attributed to the fact that human babies have immature brains that cannot…

> this is commonly attributed to the fact that human babies have immature brains that cannot mature due to birth canal constraints, which is constrained by pelvis size which is constrained by the need to walk upright Interestingly, the EGG hypothesis postulates that the constraining factor is not pelvis size, but rather that neonates consume so much energy that we give birth just before a women's metabolic limits wou…