Recently, Alberto Cairo created the Datasaurus dataset which urges people to “never trust summary statistics alone; always visualize your data”, since, while the data exhibits normal seeming statistics, plotting the data reveals a picture of a dinosaur. These 13 datasets (the Datasaurus, plus 12 others) each have the same summary statistics (x/y mean, x/y standard deviation, and Pearson’s correlation) to two decimal places, while being drastically different in appearance.
A harsh, but objective view on the new industry buzzword – the blockchain:
Nobody’s in charge, and you can’t change or delete anything, only view and input data. The first, best-known – and practically only – use of blockchain technology is bitcoin, the digital currency that allows you to transfer money without the involvement of a bank. There are now three mining pools which are responsible for more than half of all the new bitcoin (and also for checking payment requests). Blockchain generalises the bitcoin pitch: let’s not just get rid of banks, but also the land registry, voting machines, insurance companies, … The only thing is that there’s a huge gap between promise and reality. It seems that blockchain sounds best in a PowerPoint slide. Most blockchain projects don’t make it past a press release
Just like Sheldon Cooper, I love lists. If I would make a list of things that I love, lists would be one of the first items. So here’s an awesome list of Laws, Principles, Mental Models, Cognitive Biases. One example:
“The best way to get the right answer on the Internet is not to ask a question, it’s to post the wrong answer.”
Ronnie won his sixth World Snooker Championship. A week after, he sat together with Simon Hattenstone, the ghostwriter who helped him write his biography.
He was always regarded as the sport’s most naturally gifted player; now the consensus is that he’s the greatest. Ronnie is called the Rocket for his speed and power. But there is also a sublime grace to his playing – the way he makes the cue ball dance, the delicacy with which he picks off balls and opens up the pack, his balance, the ability to swap from right to left hand depending on his shot or mood. In a sport not overly blessed with charismatic players, he has been the personality of snooker for a quarter of a century. In his 30s he became obsessed with middle-distance running. “A lot of the time I would think: ‘I don’t actually want to win this match because I’ve got a five-mile cross-country race I want to win back in Essex.’ Running became more important than snooker. Now, he is in a good place. He came off medication when he realised it was making him moody and he was taking it out on his son. He is sticking with natural serotonin – running. In lockdown he got himself a coach and has not looked back. “I can run for an hour, 7.45- to 8-minute miling. Running is my drug.” I ask him about the future, expecting him to talk about books, endorsements, punditry and a bit of snooker. “The one thing I thought I’d excel in was being in the care industry,” he says. Is he serious? He nods. “I can empathise with people in addiction”.
The annual road trip with my Model S is done. Over 2000km and 10 supercharging stops – this roadtrip covered only two countries this time – Belgium and France:
Some notes along the way:
for the first time since I bough my Model S, I noticed a queue at one supercharger. A good sign, I suppose (Tesla fleet increasing), but also a worrying one – the supercharging network must be expanded quicker so that it doesn’t become a victim of its own success
charging tip: if you use a power extender, make sure you unroll the cord. Leaving it rolled while you charge will make the extender’s thermal protection kick in, especially under the Provence summer heat (the extender will also have a restart button which you can use after it cools down).
another charging tip: while supercharging I started to turn the cabin climate off. Walk away from the car, let it supercharge, and then, a few minutes before I go, stop charging and then cool the car. This way I avoid putting pressure on the cooling system; as I learned the hard way last year, there are parts of it that cool both the battery and the cabin.
uphill roads will eat up the range pretty quickly. For instance, an elevation difference of 1200m over 21km ate up about 90km of range. Doing the same trip with an empty car doesn’t change things too much.
the increase in speed will eat up the range in a non-linear way. An average of 110-115km/h will keep the ‘consumption’ under 180 Wh/km, even with a full car. Going up to 130-135km will take that up to over 220 Wh/km. Non-linear, as I said: the speed goes only 17% up, but the consumption increases by 22%
the only incident during this road trip: the driver’s door handle is now stuck half-open and I can no longer open the door from the outside. The problem is not uncommon apparently:
Tesla Model S doors, in fact all Tesla doors, are opened electro-mechanically. When you pull the door handle to unlock the door you are not mechanically releasing the door, you are actually making the door handle close a micro-switch which then triggers an electronic component to release the door. What can happen is one of the microswitches (highlighted on the picture) or the wiring coming out of it can fail and the signal either doesn’t get created or doesn’t get transmitted to where its needed.