Phylogeny doesn't have a point. The US culture is DIFFERENT then Japan! Don't you understand that?
Mamma Mia! You do kind of understand the point. Phylogeny was being facetious to show how just using statistics (and then saying "this narrow statistic proves y") is idiotic. There are other factors involved.
He took your case, "Fewer children from double parent families go to prison" and disregarded the situation of those mothers/double parent families. He then applied it to another situation "In Japan they live in 3-4 generation families and have an EVEN LOWER crime rate therefore we should live in 3-4 generation family situations". It's idiotic, but it's the exact same line of argument as your own.
He was attempting to show the old saying of 'correlation does not equal causation'. Please tell me that you understand the difference between the two. The reason that's important is that you can then fix the other factors involved (by giving aid, improving social programs, providing free day care etc) to address the real reason that the situation occurs - socio economic differences.
In addition, the Asian culture, be it in the US or Japan or any other country, is different. Let me explain to you since I come from that culture: In Asian culture, we are taught to respect our elderly and to preserve the family environment.
Indeed, as someone who's studied Japan extensively, lived here for the last two years, lived with a Japanese family, and dated a few Japanese girls I can say I know absolutely nothing about "Asian culture" (and I think more then a few Koreans, Chinese, and Vietnamese would resent being lumped into a singular 'Asian Culture' with the Japanese or each other). Yes, respecting your elders is the relative norm; yet as a teacher I frequently run into youth who do not fit this norm. This again points to the point Phylogeny was making - you can't trust a single number pulled from a study, you have to examine the whole situation in its entirety.
Just tune in the 10 or 11 o'clock news and who do you see most of the time? I might be stereotyping, but you don't understand the Asian culture.
Wait, that Virginia Tech shooter - what culture was he from again?
If you want to live in that culture, then go ahead and try it. Nobody is telling you that you shouldn't. There's more, but I won't waste your time and my time. So the single mother in the US is DIFFERENT than the single mother in Japan. Single mother in the US, most of the time, don't have the structure of 3-4 generations to help her, no matter how you want to deny it. In Japan, the 3-4 generations in the same household is the NORM, and not the exception!
Yes, and his point is that their norm has lower crime rates so, by your logic, we should all adopt it. It's simplistic, but it's an extension of your own argument and the rhetorical device is meant to demonstrate the absurdity of the original suggestion.