On Wed, 30 Jan 2019 10:18:34 +0000
GB wrote:

On 29/01/2019 22:37, Rob Morley wrote:
On Tue, 29 Jan 2019 10:03:42 +0000
GB wrote:

[...]

Be careful with "common sense" - turns out it's not very common, and
sometimes not as sensible as it seems. Did you know, for example,
that cyclists who wear helmets can be at greater risk than those
who don't?

This?

https://www.theguardian.com/science/...ppetite-danger

That's just one half of risk-compensation behaviour, being willing to
take greater personal risk. There's similar evidence that drivers will
put helmet wearers at greater risk by overtaking them closer and faster
than non-helmet wearers.