No
Is that "No, I never open sourced anything"?
Or, "No, I have open sourced things, but never regretted it"?
Readit Newsmike-the-mikado commented on Ask HN: Have you ever regretted open-sourcing something? · Posted by u/paulwilsonn
mike-the-mikado commented on Show HN: Wordle-style game for Fermi questions fermiquestions.org/... · Posted by u/danielfetz
An interesting game, if you can come up with enough good questions. (At least it isn't telling me which digits are right, but in the wrong place).
With a target of 20% accuracy, it won't make much difference, but I think that symmetrical error bounds are appropriate in this case - the factor by which the answer is wrong. so 2 times too big, is as good as 2 times too small.
mike-the-mikado commented on Australia’s gains in wheat-farm productivity reuters.com/investigation... · Posted by u/tiarafawn
> Australia has among the lowest agricultural subsidies
other countries would be wise to adopt that, but there is zero chance of that happening.
> other countries would be wise to adopt that
Until they can't import food and can't feed their people
mike-the-mikado commented on Helsinki records zero traffic deaths for full year helsinkitimes.fi/finland/... · Posted by u/DaveZale
https://www.tomtom.com/traffic-index/ranking/ 30 km/h is equal to 20 min/10km, 50 km/h is 12 min/10km.
So Helsinki city center is at 21km/h travel speeds, metro area at 31km/h. A speed limit of 30 km/h doesn't really affect these travel times much.
I can't find 2023 data to compare, however by other data on the net these are very common average speeds for any city in Europe even those with plenty of 50 km/h speed limits.
If more people take up public transport, bikes or scooters in fear of an average travel speed reduction of 1-2 km/h - that is a total win for everyone involved including drivers.
The Tom Tom data is interesting, but time taken for 10 km is not really an appropriate metric. In a more densely populated city, journeys are likely to be shorter.
mike-the-mikado commented on A short post on short trains shakeddown.substack.com/p... · Posted by u/surprisetalk
Freeway capacity is maximized around 35 MPH. Faster, and the greater distance between cars reduces capacity. Slower, and there are not enough cars per minute per lane. So the goal of ramp metering signals is to throttle input to keep the freeway speed around 35 MPH.
Interesting - I have believed for many years that it was around 17 MPH. I felt that this tallied with my observations - as traffic levels increase, vehicles slow down (increasing total capacity) until it falls to a critical speed (when slowing down reduces capacity) and then it changes to stop/go.
In my experience (on UK roads) this critical speed is around 17 MPH - but it might be a little different elsewhere.
I love seeing the progress in mechanical (real world) tech.
I'm becoming somewhat (although not completely) cynical in a "devil is in the details" kinda way.
It seems we see a lot of hype which either fizzles out, or never seems to make it all the way.
This one us at the pilot plant stage, so at least made it out the lab. I hope it makes it all the way to full size production.
You probably have to go quite a long way into answering "is it feasible" type questions, before you can answer "is it cost effective" questions. Maturing a technology will typically take many steps, each with exponentially increased costs. Finding the money for the initial (cheapest) steps may be a lot easier, especially since the pay-off may prove to be higher than expected.
Research is akin to gambling. You cannot predict which bets will pay off, but if you can win on average, it's worth betting as many times as you can afford.
I assumed that optimisation of run-time stopped when run-time on a modern computer was judged acceptable.
At the end of the day if the phone draws more power than the power source provides, you're limited to bursts of activity until the capacitor is depleted and then the phone is dead while the capacitor recharges. 0.2W is barely enough to power an idling phone, let alone charge an extra capacitor.
Today we juggle with ~15+Wh batteries (the "capacitor") and 30+W fast chargers (the "power source") and still need better.
It doesn't need to replace conventional charging. But a phone that gained charge when unused might still be useful - being able to make a call later might be better than never.
(2016)
It will be a far higher proportion in the countries where there are suitable locations.
it is predictable and reliable, so has significant advantages over wind.
Quite possibly, with a suitable distribution of sites around the UK coast, the total power generation might be nearly constant over time.
A guaranteed minimum power generation would presumably be very useful.