jcjordan wrote:
So 2 out of 26 million is now considered statistically correct for extrapolating data.
If I type slowly maybe you will follow.
2 people say categorically that the reason they gave up cycling for years because of the helmet law. That IS a statistic. IT entirely disproves your contention that no one had proved that helmet laws affect participation in cycling.
2 people out of 11 billion would hold the same value. It entirely and completely disproves your assertion.
You can indeed argue that the first two people who responded to your post were the only two people in the history of humanity to actually behave in that way. It makes you look a complete jerk without the slightest grasp of probability theory. But yes you can make that argument and not completely be nuts.
You can argue that its a number that holds no statistical significance. A continuation of the theory above. Perhaps admitting to another half dozen irrational people out there who have quit cos of the helmet law. And that is indeed a somewhat defensible opinion. Dissenting evidence abounds but meh. Its the obvious response for you to make
BUT you can no longer argue that helmet laws do not affect participation in cycling. Not logically. The only thing you can argue logically is the degree of effect.
IS THAT SIMPLE ENOUGH?