Peter Keller wrote:


When our Mandatory Helmet Law came in in 1994 I complied, even though I
was dubious. (Very few data then, just a lot of handwringing and 'it will
save costs in the long run --') I also thought the helmet would detract
from road and traffic awareness, hearing etc. I found actually that my
hearing was enhanced, so that I often thought a car was behind me where
there wasn't one. (Perhaps "distorted" is a better word).

Most certainly is distorted!