I shivered at the thought of being severely brain-damaged after being hit by a car while cycling about a month ago. I am now extremely humbled by the fragility of the human body. The vehicle that hit me was going really slow--a hard requirement of the lane. An apt cyclist can easily achieve 30 MPH (48km/h). That's enough to do a lot of damage itself. Now imagine a shock with a vehicle coming in the opposite direction at a mere 20 MPH (32km/h) (that’s not what happened to me BTW. I have no recollection of the accident, and no wish to get in touch with the driver. I don’t resent him at all, in fact he was extremely caring and wanted to ride with me in the ambulance but my mom was already occupying the only spot).

I'm terrible at physics but you guys and girls are probably not, so you make the calculations. To sum up, without a helmet a ridiculously "benign" accident at low speeds can literally impair you for life.

After the crash, my helmet went into pieces. I wish someone had got it so I can visualize the extent of my luck. It was an old helmet that should have been replaced at least 2 years ago. It cost me about 30 bucks and probably saved my life or cognition.

So, cyclists: own a helmet and use it whenever you're on the bike even if there are no cars around. A skilled cyclist can still crash all by himself/herself. And a car could appear from nowhere.

Some people get brain damage by falling in the bathroom. Why would you be safer waltzing around on top of a metal frame?

I was reading this twitter post and it made me wonder if you have any ideas to stop speeding by car drivers? Have any of these ideas been tried anywhere? I'm also interested in unintended consequences.

https://twitter.com/agnessjonsson/status/1229103764843438086?s=20

Agnes @agnessjonsson

fact of the day: Sweden once experimented with a “speed camera lottery”. Those who drove within the speed limit were automatically entered into a drawing where the prize fund came from fines that speeders paid.

They tested it in a few different cities and I haven’t read the results of each one, but in Stockholm the average speed on the selected road decreased by 22 percent.

Kitchen knives are frequently used to stab people. This results in serious injury or often death. Most stabbing murders are perpetrated with kitchen knives, reflecting the huge numbers of knives available (most homes have one), and where most murders happen (in the home). (I'm talking about UK here).

Kitchen knives have a cutting edge and usually a sharp piercing point. There's nothing that can be done to make the cutting edge safer. But we can look at the pointy tip.

Pointy tips are useful, but we tend to find that only professional chefs or experienced home cooks use them. Most people cooking at home don't use or need such a pointy tip.

There are some companies releasing knives without the pointy tip, and I'm interested to know what you think.

https://twitter.com/JohnHMCrichton/status/1209095901102387200?s=20