Peter Hitchens @ClarkeMicah
1/2 Look .@arbuthnotting, a cardboard box would be *partially protective* if your measuring instruments were sensitive enough. But fatal or severe injury bike crashes tend to involve cars and lorries at speed. — PolitiTweet.org
Arbuthnotting @arbuthnotting
@ClarkeMicah I agree with your main point that helmets may not always do more harm than good. I reject your needle… https://t.co/ALh7k3kjf6