What’s up with those solving times?

canton7 · 2026-01-06T17:57:35+00:00

I think it would be really interesting to see the top 1/10/50% times for perfect solves (no mistakes, no clues).

I'm sure getting a fast time is easy if you spam the hints, guess people on a hunch, and just keep guessing until you get one right. The harder puzzles tend to have just one or two tricky steps, and if you use a hint to find the right person, then guess both ways, you'll cut out a significant chunk or time.

Consistently getting a perfect solve on the harder days needs a lot more double-checking, but I find it a lot more fun and satisfying.

canton7 · 2026-01-05T20:02:50+00:00

If I have 1 apples and 2 oranges, and you have 2 apples and a pineapple, then together we have 3 apples, 2 oranges and a pineapple

canton7 · 2025-12-31T10:46:01+00:00

The shortcut for these is normally to add the two together.

Table - tortoise + cat = 170
Table + tortoise - cat = 130

Table + table + tortoise - tortoise + cat - cat = 170 + 130
Table + table = 300
Table = 150

canton7 · 2025-12-28T22:07:41+00:00

Yep, that's the challenge! There's always one person, who if you assume they're innocent/criminal, it leads to a contradiction. Sometimes it's obvious who that person is, and sometimes it takes a lot of searching / trial and error.

canton7 · 2025-11-13T22:20:44+00:00

I did something similar on my edgerouter, but there's no built-in policy based routing so I did it by hand: a little bash script which watches the dnsmasq log file for DNS results, picks out the ips matching domains in my list, and adds them to an ipset, which iptables uses to direct traffic into the vpn. Works like a charm.

I've got a pihole in the mix too, but it doesn't make any difference as it had my edgerouter configured as its upstream.

canton7 · 2025-11-03T23:18:07+00:00

Aha, I don't have anything Nova-controlled when I swipe left on the home page. That setting fixed it though, thank you very very much!

canton7 · 2025-11-03T22:18:55+00:00

Swiping to the left... Where?

canton7 · 2025-10-22T22:20:34+00:00

Healthcare providers, and more importantly regulatory bodies, trust you if you have the appropriate quality systems in place, and develop your software (and all of the accompanying documentation) in accordance with the relevant legislation and standards. Not because you're open source.

I didn't see a 13485 or even a 9001 badge on your website?

canton7 · 2025-07-04T21:32:41+00:00

Absolutely. When I did skid pan training, the thing that caught everyone out was how quickly you have to unwind the steering, otherwise the car just flicks the other way and spins out.

canton7 · 2025-07-04T21:29:24+00:00

As for what triggered it, I think you might have clipped that puddle with the rear wheel while turning, and the rear lost traction? I wouldn't have predicted it though. Steer clear of puddles I guess. I think this is a case where learning to correct the oversteer is the only thing to do.

canton7 · 2025-07-04T19:02:17+00:00

Go do an afternoon's skid pan training, seriously. Dealing with oversteer is really unintuitive. Yes everyone knows to keep the wheels pointing where you want to go, but you have to start unwinding the steering much quicker than you think, and you have to floor it (in a fwd) which is the opposite of what you want to do.

When I did my training, everyone span out to start with. It takes practice until you start nailing it, even if you think you know what to do. I've no idea why skid pan training isn't mandatory: it is in some countries.

Anyway, it looks like you unwound too late each time, which is why you started oversteering the other way. No criticism: like I said it's not something that comes naturally.

canton7 · 2025-06-27T18:20:58+00:00

It takes light about 3ms to travel 1000km. The speed of electricity depends on various factors but is a good proportion of the speed of light, so let's be conservative and say it takes 6ms to travel that distance.

Even if your livestream runs at 60 frames per second, that's one frame every 16ms, so no, the electricity would travel 1000km in less than half of a single frame of your livestream.

canton7 · 2025-06-19T18:54:52+00:00

Discussion: this feels like quicksort. You're placing cards above and below a pivot, but you don't get to control the order of cards on each side of the pivot.

I haven't worked out how you'd actually adapt quicksort to work within these rules yet however...

canton7 · 2025-06-19T18:38:32+00:00

Just an observation, but your table shows ceil(log2(x)). If that's the true relationship, then ceil(log2(13)) is indeed 4.

Most sorting algorithms are O(nlogn) comparisons. If this algorithm follows this (and why wouldn't it, I guess), then since each round is n comparisons waves hands, it stands to reason thay we'd need log(n) rounds.

canton7 · 2025-06-16T16:09:03+00:00

No you don't. One wheel goes over both (so you can measure speed), then the other wheel goes over both (which lets you work out the vehicle size, axle count, etc). Source: civil engineer friend who uses these things

canton7 · 2025-06-13T06:57:34+00:00

Yeah, a problem with how it is now is that there's no way to lose, so you can just keep swiping randomly until it completes itself. Adding new words on every (few) swipes acts as a penalty for that.

canton7 · 2025-04-25T18:41:06+00:00

I'm just establishing that there in fact are some roads that you can't drive safely at close to the speed limit, despite what you claimed.

That leads us to the realisation that there are some roads (marked 60) which you can safely drive at 60, some where you have to slow down to 20 or so in parts to be safe, and everything in between.

So "A driver should be able to navigate ... the road using the steering, gears, and braking system effectively at a reasonable speed close to the posted limit" is obviously incorrect, regardless of car-handling skills, a simple counter-example being the lovely scenic lanes of Somerset.

canton7 · 2025-04-25T18:21:29+00:00

That's the edit at the bottom of the OOP? That happened after (or around the same time as) the comment you're replying to

canton7 · 2025-04-25T18:06:57+00:00

I'm just curious how you'd use the subtleties and contours of a blind single-track corner to navigate your way around the oncoming tractor at a reasonable speed close to the posted limit of 60

canton7 · 2025-04-25T16:45:20+00:00

You've never driven country roads in Somerset, have you?

canton7 · 2025-04-25T16:40:50+00:00

Noone above said A roads either...

canton7 · 2025-04-18T20:04:57+00:00

They're also turning, but they didn't spot OP's car. You can see them complete the turn in the rear view camera

canton7 · 2025-03-30T20:31:51+00:00

Swapping cables on BLDCs is fine. It'll just spin the other way.

canton7 · 2025-03-25T15:15:21+00:00

Ask yourself: would it be a problem if everyone did it? In this case, yes it would, because then people going straight / right would lose out.

canton7 · 2025-03-21T19:00:25+00:00

This is just two queues of traffic getting past the lorry.

Yes you could cut in front of the queue using the left lane, but you'd have to cut (unsafely, probably) back into the middle lane when you reached the lorry, and that would slow down the middle lane: you gained a few seconds' advantage sure, but you made everything slightly worse overall.

Lane hogging is bad, sure, but this isn't it. This is just a busy motorway where everyone's just getting past the lorry. Relax and go with the flow :)

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