Psychlist

The flip side s that you don't have to use Chrome+Google for everything. I buy ebooks and watch youtube on it, plus my phone (so I buy android apps via the same google account). And Gmail is my fallback email account so that doesn't see much traffic.

I use 3-4 browsers and because WFH + VM's for coding some incidental sandboxing.

Isn't Linus Tech Tips an ad, though? The only times I've looked at it all I've seen is sponsored content with breaks to talk about sponsors and maybe buy some merch. Oh, and exhortations to use their affiliate links. And that's using Premium, I expect that without it the sponsored content would be broken up by youtube's ads.

Maybe my expectations are biased by subscribing to Nebula? And for those who do, Medlife Crisis just posted a fun video on the placebo effect featuring great (fake) sponsor callouts.

People can have absolute/exception memory for other things too. I dated a woman who could look at a bit of cloth and say "that's the same colour as..." and be right every time. Even when she hadn't seen the other item of clothing for months. It made shopping with her somewhat less painful because she wasn't constantly swapping things just to look at the colours.

Much better than perfect pitch, otherwise known as the ability to know that something is out of tune, by how much, and struggle to ignore that. A violinist friend managed to train herself to shift pitch to match the rest of the orchestra but I suspect part of the reason she turned to the dark side (jazz) was the latter's ability to adapt to her sense of correct pitch.

>the "real" perfect pitch people are always anchored, no matter how much noise anyone throws at them. Which is also a source of discomfort and difficulty

Not least because the argument about "what note is this" and "what note do you think you're singing" starts basically day one of singing lessons. Trying to learn any practical music when you can hear the difference between close frequencies mean you're effectively learning colours from a group who insist that blue and green are the same colour.

One of my party tricks used to be saying the song and artist from the first 5 seconds of a track. These days with samplers and synthesisers that's almost impossible. I still get tripped when I hear some samples, like "that's the bass guitar from {song x} WTF" in the middle of some otherwise pleasant song.

If you have a fast design/architecture, you may never need to optimise the code at all. But the flip side is that with a bad design or bad architecture optimising the implementation won't save you. With a sufficiently bad architecture starting again is the only reasonable choice.

I've seen code that does "fast" searches of a tree in a dumb way come out O(n^10) or worse (at some point you just stop counting), and the solution was not to search most of the tree at all. Find the relevant node and follow links from that.

Meanwhile in my day job performance really doesn't matter. We need a cloud system for the distributed high bandwidth side, but the smallest instances we can buy with the necessary bandwidth have so much CPU and RAM that even quite bad memory leaks take days to bring an instance down. Admittedly this is C++ with a sensible design (if I do say so myself) so ... good design and architecture means you don't have to optimise.

My expectation is that one combustion car owners have to pay more of the cost of that fuel choice they'll change over. Lots of people already drive 20 minutes to save $10 on a tank full, or queue at the gas station ditto.

What we're really waiting for is second hand EVs in real numbers, or the political decision that small, electric cars are the only ones allowed on most streets. That would dramatically cut the death rates from both pollution and vehicular homicide.

nothing interesting, just repairs and tweaks. I'm building a granny flat instead :)

A missing top tube is much easier to deal with than a missing down tube. Lots of bikes have pushed that a very long way. But the main forces there are twisting the pedals against the handlebars and using the front brake, which the downtube is very involved with.

You could build that bike out of steel tubing and it would be rideable, as I said, but insofar as it's broken it's broken at the missing down tube.

Slingshot, for example, had no down tube just a wire and that was a bit notorious for being squirrely in the steering.

You could definitely build a bike like that that was quite rigid, it would just be heavy or expensive or both. A decent carbon layup, for example, might bring it back to the chain forces going through the seatstays being the main issue. But that's something you'd want to analyse a lot before building it. And I think you'd end up wanting a much bigger head tube lug than shown.

There's a reason that horses were the fancy sports car/military tool of the animal transport world. They eat a lot, break easily, and don't last long.

People used oxen, donkeys, llama etc way more than horses. And the Chinese invented wheelbarrows and used them extensively rather than using draft animals. They often use bicycles much the same way as wheelbarrows now, and rich people often find that amusing (possibly because a KMart bike is a toy, a Chinese bike is a workhorse).

Nope, with single speed/hub gears chain wear is still a problem, it's just that they're less sensitive to it and there's fewer parts to replace. When the chain gets longer it gets loose, but it has to be very loose indeed to fall off or skip on a single speed. With a derailleur setup there's a tension arm with a weak spring so when the chain wants to skip that tension arm lets it. Derailleur setups commonly have some cogs with fewer teeth than single speeds so the problem is more obvious. Also, often derailleur cogs are aluminium while single speed ones are steel (not always!).

Typically a safety bike will get through 3-5 chains before needing to replace the rear cog, and many more before replacing the chainring(s). But Pinion gearboxes in the bottom bracket often run small chainrings that are similar in size to the rear cog, and I suspect they need to replace both rather than just the rear one.

> I vaguely recall that people did state that rowing is what you should use to get the most energy out of a human body

The limit for athletes is normally cardiovascular, commonly oxygen - VO2max the the measurement there. For less fit people it can be the cardio side, their heart just isn't up to it so their muscles fail and they lie on the ground twitching. Oxygen-deprived people pant and gasp.

So recruiting more muscle groups really doesn't help. What does is increasing oxygen intake, and this is where recumbent bikes come in. The laid back position opens the thorax and increases effective lung capacity. As well as reducing air resistance, except that that's a very subtle thing that mostly depends on the rules governing the sport in question (fairing on bike and kayak, for example, are variously restricted or banned in most relevant sports).

You can also reverse that and exercise at high altitude... less oxygen for everyone!