11–20 of 181 posts
Because so many people are still not lactase persistent, it is still possible to see how much that changes over time and the change might be noticeable over a relatively few generations.
Earlier quoted context omitted.
I believe school should mostly be help with what is currently deemed “homework” and homework should consist of watching lectures, interesting videos, etc. from the incredible plethora of existing content that is superb. No individual teacher could ever create lessons as good as those (plus it’s exhausting). Teaching is backwards and hasn’t evolved in 100 years!
Yes, the educational system is about two standard deviations worse than a private tutor. There's a name for this effect, but I don't remember it. As someone who was homeschooled, I'll do that for my children as well, and I hope I will be able to afford a tutor to assist with that. I've had no difficulty in life competing with people who went through the public school system, and I want my kids to have the same advant…
Earlier quoted context omitted.
Yes, the educational system is about two standard deviations worse than a private tutor. There's a name for this effect, but I don't remember it. As someone who was homeschooled, I'll do that for my children as well, and I hope I will be able to afford a tutor to assist with that. I've had no difficulty in life competing with people who went through the public school system, and I want my kids to have the same advant…
It seems your school really sucked, and not just with regards to learning as most schools seem to do. For many people, though, school is also a source of lifelong friendships, romance, and other good things.
It doesn't really surprise me much that lactase persistence should be so strongly selected for in a relatively short period of time. Cows and other ungulates possess a rather magical ability to turn something that can't be digested by humans (cellulose) into something that can (milk). Opening up the huge caloric and nutrient resource of cellulose to humans in a relatively replenishable way had to be a giant benefit t…
If it's so powerful, why did it not take over the rest of the world, or at least the rest of Eurasia? You'd think just a few people having kids with foreign populations would make the gene conquer the whole planet? They had cows in other places as well, right? One guess might be that winters in Europe were harsher than other population centres (China, India, Middle East), and periodic famines meant that some people w…
Time. For going from 1/10 000 000 to 25% of the population in 300 generations (7500 years), you need to have a gene that give you 5% more offsprings at each generation.
It doesn't really surprise me much that lactase persistence should be so strongly selected for in a relatively short period of time. Cows and other ungulates possess a rather magical ability to turn something that can't be digested by humans (cellulose) into something that can (milk). Opening up the huge caloric and nutrient resource of cellulose to humans in a relatively replenishable way had to be a giant benefit t…
If it's so powerful, why did it not take over the rest of the world, or at least the rest of Eurasia? You'd think just a few people having kids with foreign populations would make the gene conquer the whole planet? They had cows in other places as well, right? One guess might be that winters in Europe were harsher than other population centres (China, India, Middle East), and periodic famines meant that some people w…
Cattle are not always found in other places.
Earlier quoted context omitted.
If it's so powerful, why did it not take over the rest of the world, or at least the rest of Eurasia? You'd think just a few people having kids with foreign populations would make the gene conquer the whole planet? They had cows in other places as well, right? One guess might be that winters in Europe were harsher than other population centres (China, India, Middle East), and periodic famines meant that some people w…
Uhh, they just drank different milk. Ox milk, goat milk, etc. Cattle are not always found in other places.
It doesn't really surprise me much that lactase persistence should be so strongly selected for in a relatively short period of time. Cows and other ungulates possess a rather magical ability to turn something that can't be digested by humans (cellulose) into something that can (milk). Opening up the huge caloric and nutrient resource of cellulose to humans in a relatively replenishable way had to be a giant benefit t…
Lactase persistence isn't the only (or even first) way to convert inedible flora into food. For one, you can simply eat the cows, the way it was done for most of human history. If you absolutely insist on dairy though, the genes for lactase persistence post-date dairying by a few millennia and many people who rely primarily on dairy today still lack the genes, like most Mongolians. They've adapted different productio…
It could be more resource intensive to get a new cow each time rather than milk the same cow over and over for a longer period of time.
It doesn't really surprise me much that lactase persistence should be so strongly selected for in a relatively short period of time. Cows and other ungulates possess a rather magical ability to turn something that can't be digested by humans (cellulose) into something that can (milk). Opening up the huge caloric and nutrient resource of cellulose to humans in a relatively replenishable way had to be a giant benefit t…
Lactase persistence isn't the only (or even first) way to convert inedible flora into food. For one, you can simply eat the cows, the way it was done for most of human history. If you absolutely insist on dairy though, the genes for lactase persistence post-date dairying by a few millennia and many people who rely primarily on dairy today still lack the genes, like most Mongolians. They've adapted different productio…
I know this because my kids watch horrible histories. My kids know more about history than I learnt at school by watching horrible histories. Primary school history lessons should watch all the horrible histories, they really are great at teaching kids.
I believe school should mostly be help with what is currently deemed “homework” and homework should consist of watching lectures, interesting videos, etc. from the incredible plethora of existing content that is superb. No individual teacher could ever create lessons as good as those (plus it’s exhausting). Teaching is backwards and hasn’t evolved in 100 years!
https://en.wikipedia.org/wiki/Flipped_classroom
I agree, it's very much the future (if we ever get there).
I know this because my kids watch horrible histories. My kids know more about history than I learnt at school by watching horrible histories. Primary school history lessons should watch all the horrible histories, they really are great at teaching kids.