by copious.abundance » Sat 05 Jun 2010, 02:10:09
Doing it by email would be an absolute no-go. If you think getting people to fill out a form mailed to them is hard, do you have any idea how difficult it would be to get a lot of people to give the government their email so they could send them a form? Not to mention people filling out multiple forms, and all kinds of other nasty stuff that can happen with email.
I spent much of 2 months late last year pouring over and correcting the Census Bureau's list of addresses in the jurisdiction I work for, and here's a bit of insight . . .
1. The people who fill out forms at an address must have that address as their main residence. This makes things complicated in many areas due to vacation homes. This is the case where I work. It can be VERY hard to tell if some houses are someone's permanent residence, or just a vacation house. The census field workers are required to visit a non-responding house 6 times before they are allowed to give up. Sometimes after a couple tries it becomes obvious the place is just a vacation house, but they are still required to try another 4 times afterwards.
2. Similary, in rural areas there are A LOT of trailer parks which are VERY hard to tell if someone lives there permanently, or if it is just a trailer park in someone's backyard that they let guests stay in occasionally. To make things more complicated, there are some large trailer parks which are intended to be vacation places, but which some people live in permanently.
3. There are A LOT of people both in urban and rural areas who don't trust the government to do anything, so the last thing they would want to do is fill out a form with their name, their wife and kids' names, their address, their race, etc., and hand it over to the government. Illegal immigrants, of course, would be one such group in this category.
4. A lot of people still do not have a computer and email. Needless to say, if they did an email census, reaching those people would be problematic.
As an aside, given #1-3, I suspect the response rates are a bit higher than the census states they are, but they don't know the nature of all the addresses they have, so they just go by the % of addresses that have filled out forms. For example, this is how they calculate that:
Let's say City Z keeps reasonably accurate records of all the residential addresses in their city limits (most cities do). They go through a process with the Census Bureau to verify all these addresses (this is what I did last year, and an employee before me did a first round of it with the Census Bureau in 2007-8, and the Census Bureau themself sends out field workers to check addresses). As noted in #1 and #2, there is a lot of uncertainty with some addresses. This is probably more of a problem in rural areas and decaying central cities than it is in suburban areas, whose residences tend to be easier to identify. Anyway, at some point at the end of this process they'll decide on a number - let's say they've come up with 7,822 residential addresses in City Z. It could be that 154 of those addresses actually were recently abandoned houses and vacation houses, but the workers at the city and the census couldn't be certain, so they decided to include them, just in case. Anyway, the Census Bureau will send out forms to each of those 7,822 residential addresses in March, and then wait a month or so.
By the April 15 "deadline," let's say the Census Bureau has received 6,581 forms back from City Z. That would be an 84% response rate - which is where the initial "response rate" figure comes from. But in reality, City Z only had 7,678 qualifying addresses, so the "real" response rate was 86%. However, both the Census Bureau and City Z don't really know that because they assumed the 154 borderline addresses were legitimate (though undoubtedly some employees have a hunch about the number since they were the ones who reviewed the addresses, but they aren't really sure).
At this point is where the Census Bureau starts sending out field workers to get people to fill out their forms. Sometimes they get people to fill out the forms, sometimes they find out the houses are vacation houses or otherwise not occupied, and sometimes the yards of the houses are guarded by pit bulls with "No Tresspassing" signs all over the place and the field worker just does not have good odds of getting ahold of those people. And sometimes the occupants of the house are alcoholics or drug addicts with whom you cannot have a coherent conversation with . . . and all kinds of other "interesting" stuff.
Anyway, given all the problems and issues which arise trying to count people in real life, I don't even want to imagine all the problems and mayhem which would almost certainly occur if they tried to do this via email.
And as another aside, I am sometimes accused of blindly believing government statistics. In my own job I help to *generate* some government statistics, so I have a good idea how bad or good they might be. They are certainly not perfect, but it is impossible to get perfect statistics on anything like this, so if anyone thinks they have better data, they are naiive.
Stuff for doomers to contemplate:
http://peakoil.com/forums/post1190117.html#p1190117
http://peakoil.com/forums/post1193930.html#p1193930
http://peakoil.com/forums/post1206767.html#p1206767