Originally Posted by interested

I don't know about where you ride, but ninja riders actually do exist and not in any small number either. You seem to say, that if people always remembered their lights and never forgot to recharge them etc, then there wouldn't be any ninja cyclists.
My point is, that forgetting, making wrong predictions, having small accidents is what people do and experience all the time, which is why ninja cyclists are seen all the time. So if you see a ninja cyclist, chances are that it isn't because he can afford lights or doesn't own any, that he rides without lights in the dark.

Exactly, human behavior is. Humans make a lot of right decisions a lot of the time, but they also make mistakes. Having dynamo lights simply takes out the "human error" element when it comes to lights, which is why dynamo light equipped bikes almost never are ninja bikes.

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Regards