Quoted message said:Frank Krygowski said:I'm sorry, Robert, but I've been giving data from various respected
sources.
What "data" have you given? About the only thing you have posted that
could conceivably be called data in this debate (about the relative
danger of cycling) is the NSC number that there are 72 million
participants in the US, which you then plugged into the NEISS data to
get an injury-per-participant number. Notwithstanding the fact that the
72 million figure is another complete shot in the dark...
Or, to put it more honestly: You don't like the fact that biking checks
out to be quite safe, so you choose to disbelieve numbers that say
otherwise!
Quoted message said:Quoted message said:Re-read my paragraph quoted at the top of this post. You still have not
come up with anything significant to indicate a high degree of danger in
cycling.
That is not my purpose. What I am trying to get across is that the
"data" you are using to "prove" the relative safety of cycling is
bogus, useless, or irrelevant.
.... or, at least, that you don't happen to like it! It's odd that you
continue to claim this without producing any evidence!
So you sound like an idiot when, in
Quoted message said:response to my criticism of your "statistics," you demand that I
produce more data to prove cycling is relatively dangerous, as if any
data had been introduced in the first place! Earth to Frank: THERE IS
NO DATA. Got it?
Absolutely false. I'm giving data. The fact that you choose not to
believe it is a separate problem!
Quoted message said:
However, if I wanted to suggest that cycling is "not safe" or whatever
you want to say, by cherry-picking stats Krygowski-style, it would be
easier to do than to suggest with numbers that cycling is relatively
safe. There are plenty of stats if I wanted to go that route.
:-) You can't prove that without going that route! However, I'm
_really_ puzzled by your dedication to "proving" that cycling is
dangerous. This is very odd behavior in someone who claims to like
cycling. Is it a way of "proving" that you're unusually macho - that
you're man enough to do really, really risky things?
I would
Quoted message said:start with the NEISS (one million injured cyclists seeking medical
attention each year);
The paper in front of me says 586,808 instead. National Safety Council
Accident Facts, 1997 edition, page 118. Who has the misprint?
add Forester's claim that beginning cyclists are
Quoted message said:5 times as likely to wreck and hurt themselves as experienced riders;
I think you'd better give a real citation for that, and make clear
whether that's John's rough guess, or something that's actually derived
from reliable data!
Quoted message said:and throw in Kifer's finding that cyclists are 33 times more likely to
get injured (on a per-mile basis) than drivers of cars.[2] 33 times!
How does that jibe with your "cycling is about as safe as driving" act?
:-) Actually, I worked with Ken on the design of that survey, as did
several other folks. But please don't skip the statements he gives that
give the proper context! For example: "This is a very small number of
people for a survey of this kind, and it is by no means a random survey.
Therefore, the data should not be considered to represent the entire
population of cyclists."
Also "As you can see next, many of these people were just skinned
up...Note that 2/3rds of the cyclists did not have any injury at all.
Only 13 claimed injuries as severe as a puncture wound, broken bone,
concussion, or multiple injuries. There would be 40,000 miles, 64,000
kilometers, 2,800 hours, and 17.5 years between those kinds of injuries."
To clarify: I don't think anyone claims you're not likely to skin a knee
eventually, if you ride a bike enough. (I'll admit, I did once skin my
knee. Once. In the last 30-odd years of adult cycling.)
So if you're afraid of skinned knees, don't cycle. And if that's your
message, we're in agreement!
Quoted message said:... I
think you are doing BEGINNING city riders a grave disservice with the
suggestion that riding in the city is not dangerous. It is, plenty
dangerous, especially for beginners, especially in traffic.
Perhaps this is the heart of our dispute: You seem to think that
beginners are underestimating the danger of cycling. I think they are
overestimating the danger. I've heard too many people say, regarding my
bike commuting, "Oh, isn't that dangerous??"
You seem to be concentrating on cycling in traffic. Personally, I think
most raw beginners do relatively little cycling in traffic. What I've
seen is a natural, logical progression, where most beginners seek out
quieter surroundings, and gradually learn to handle more traffic.
I find traffic cycling to be an easily learnable skill, _especially_ for
those who already know the rules of the road. You seem to view it as
some semi-mystical art, where rules are nearly useless and telepathy
counts more than traffic lights.
Trouble is, I'm the guy with the data!
Quoted message said:Quoted message said:Your personal riding, as a bike messenger, may indeed be dangerous.
Compared to touring the countryside, sure. But compared to experienced
"club cyclists," my accident rate is apparently many many times LOWER
than theirs even with their most optimistic estimates. Why?
Assuming that is, in fact, true, there could be many reasons.
I think any individual's cycling safety is likely influenced by some
comparison between his behavior and the environment in which he chooses
to ride. Speaking loosely, if you ride in an environment twice as
dangerous (however that would be measured) as a typical "club cyclist"
but use three times the skill (ditto) you'd actually be ahead. And, to
give you a compliment, that may well be the case.
But, as is mentioned in the paper "Stepping Stones..." by Malcolm
Wardlaw http://www.bicyclinglife.com/Library/SteppingStones.htm
just because one activity (or style of cycling) is more dangerous than
another, it doesn't mean it carries significant danger in any absolute
sense. For the numerically literate: Doubling an infinitesmal still
yields an infinitesmal.
Quoted message said:Quoted message said:That wouldn't surprise me. You may be quite afraid of traffic.
You're an idiot. If I was afraid of traffic I wouldn't be able to get
out of bed in the morning. What I have is a RESPECT for the dangers of
traffic, which you apparently lack. Not only do you seem to lack
respect for traffic and its dangers, you are hell bent on passing this
lack of respect on to your students.
Really, there _are_ people who engage in behavior that frightens them.
Some do it professionally. You may be one of those.
But the idea that I have no respect for traffic is a fiction. Ditto the
idea that I teach others to disrespect traffic. Those ideas are flat
wrong. Sorry.
Quoted message said:1. "An estimated 57 million Americans ride bikes..."
www.nsc.org/library/facts/bicycle.htm. I was unable to locate Frank's
"data" that there are 72 million cyclists in the US on the NSC site,
and Frank has refused to provide a link.
National Safety Council, Accident Facts, 1997 edition, page 118:
Bicycle riding, 72,500,000 participants. More than twice as many as
basketball (30,100,000), but with fewer injuries. And to be counted as
a "participant" in cycling, they required _more_ cycling than they did
for basketball playing. If anything, it sounds like they underestimated
the number of cyclists.
And again, the number of recorded cyclist injuries (586,808) sounds
high, and perhaps it is, in a way. For example, it's higher than the
number of injuries caused by beds (466,464) or by tables (311,208).
But if your house has both a bed and a table, watch out! You may be
safer out riding your bike! ;-)
--
--------------------+
Frank Krygowski [To reply, remove rodent and vegetable dot com,
replace with cc.ysu dot edu]