For certain traits, you cannot break things down as a ratio of genetics:environment. For example, myopia appears to be a genetically-based trait, but it also appears to be expressed much more frequently when children learn to read (which is why such a disasterous trait for a hunter-gatherer wasn’t eliminated in the tens of thousands of years before literacy). In other words, the phenotype (nearsighted) is both entirely genetic and entirely environmental.
Some things are mostly genetic. Some things are mostly environmental. Some things are a mix of both. But currently, you are supposed to say that everything is both genetic and environmental (or be labelled a racist). And that is false.
Some things are mostly genetic. Some things are mostly environmental. Some things are a mix of both. But currently, you are supposed to say that everything is both genetic and environmental (or be labelled a racist). And that is false.
Everything is genetic and environmental. If you look low enough down.
The fact is, humans share lots of genes with each other.
Example: Suppose I tell you, “What about language acquisition? I’m sure that if I speak better Italian than Nick Bostrom and he speaks better Swedish than me, our genes have f* all to do with that.” You could answer that it’s our genes which shaped our brain in such a way that we could have picked up a native language in the first place, and a chimpanzee (or a human with major neurological problems) wouldn’t have learned Italian or Swedish even if raised in the very same environment. But when more than 99% (I guess) of the world human population would have been able to learn whichever natural (or sufficiently natural-like) language they had been raised in, such an objection wouldn’t be very useful.
On the other hand, while genes require environments in a given range to be expressed (you couldn’t raise a person to be the same as me on Mars, even if he were my identical twin brother), certain features are expressed pretty much the same way throughout the range of environments where one could survive. The probability that John’s blood type is AB+ given that he’s alive and that his identical twin brother’s blood type is AB+ is pretty close to 1, wherever John was raised.
Hence, I’d just say that language is environmental and blood type is genetic. Anything else is useless nitpicking, akin to saying that I shouldn’t say that the C and C# keys on a piano are white and black respectively because even the former does absorb some light and even the latter does scatter some.
For certain traits, you cannot break things down as a ratio of genetics:environment. For example, myopia appears to be a genetically-based trait, but it also appears to be expressed much more frequently when children learn to read (which is why such a disasterous trait for a hunter-gatherer wasn’t eliminated in the tens of thousands of years before literacy). In other words, the phenotype (nearsighted) is both entirely genetic and entirely environmental.
Some things are mostly genetic. Some things are mostly environmental. Some things are a mix of both. But currently, you are supposed to say that everything is both genetic and environmental (or be labelled a racist). And that is false.
Everything is genetic and environmental. If you look low enough down.
The fact is, humans share lots of genes with each other.
Example: Suppose I tell you, “What about language acquisition? I’m sure that if I speak better Italian than Nick Bostrom and he speaks better Swedish than me, our genes have f* all to do with that.” You could answer that it’s our genes which shaped our brain in such a way that we could have picked up a native language in the first place, and a chimpanzee (or a human with major neurological problems) wouldn’t have learned Italian or Swedish even if raised in the very same environment. But when more than 99% (I guess) of the world human population would have been able to learn whichever natural (or sufficiently natural-like) language they had been raised in, such an objection wouldn’t be very useful.
On the other hand, while genes require environments in a given range to be expressed (you couldn’t raise a person to be the same as me on Mars, even if he were my identical twin brother), certain features are expressed pretty much the same way throughout the range of environments where one could survive. The probability that John’s blood type is AB+ given that he’s alive and that his identical twin brother’s blood type is AB+ is pretty close to 1, wherever John was raised.
Hence, I’d just say that language is environmental and blood type is genetic. Anything else is useless nitpicking, akin to saying that I shouldn’t say that the C and C# keys on a piano are white and black respectively because even the former does absorb some light and even the latter does scatter some.
The notion of heritability clears up this issue a bit, as it screens off genetic similarities in the population.
Indeed. (On the other hand, people often grow up in the same region as their parents...)
So perhaps heritability should have a counterpart that screens off common environmental factors...
And everything scatters some of the incident light and absorbs some. But this doesn’t mean we should never call anything “black” or “white”.