There's no well defined "a rock too heavy for a person to lift" too, but we manage. So, what's the point?
replyI am not sure I understand the comparison. But let's say we found out that a rock is too heavy for a person to lift on Earth. Does it mean that it is too heavy to lift on the moon? No. And if we find out that something is or is not heritable, does it mean that in new circumstances such as a new policy or some sort of change of norms the heritability will stay the same? No. That's something that many people find counterintuitive.
replyI have no problem finding whether this rock is too heavy to lift for me in these specific circumstances. But if we try to define if it's too heavy in general, it becomes not well defined. Specific traits have causal development pathways that theoretically should allow to predict genes/environment interaction, but heritability uses population-level statistics.
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