I have some better quality kitchen knives I like keeping sharp.

I use a two-sided whetstone 400/2000 grit for basic shaping (400 is akin to those rolling sharpeners, to be used only when you fucked up real bad), a leather strop with green sharpening paste (~6000-8000 grit) glued to a piece of wood, a plain leather strop, and a honing steel.

Green sharpening paste is most of what I ever use, a couple of strokes weekly (more realistically about 20 once a month), and maybe polish it up with the plain leather strop. Keeps the knives wicked sharp, and then I just hone them after each use.

Sometimes I do stupid things and get burrs in my edge (like cleaving frozen bone), that’s where the 2000 grit saves me.

400 I guess is for when the apocalypse comes or your kids decided to practice chef’s knife throwing into scrap metal. It’s nice to know I can remake a whole edge, but rarely used.

UwUpeans, so great, and so horrid at the same time.

You sir/madam/gentlebeing, are a most delightfully twisted individual.

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Tl;dr:

Bathtubs started small due to size constraints of rooms, but got smaller because it’s cheaper to manufacture and handle smaller tubs.

#savedyouaclick

Sounds like great news, no?

Just as we had a time before fungus digesting plant matter, we’ve now had a time before fungus digesting plastics.

“Soon” we’ll get bacteria and insects doing the same, and all our plastic buildings will need to be protected just as the wood ones.

Written with ChatGPT no doubt

Lol, indoctrinated much?

We will still expend energy, thus satisfying the gods of thermodynamics.

My list is quite different than the ones currently in the thread.

The boring ones:

Creating a vaccine or other cloaking to make humans invisible to ticks & mosquitoes. A separate project would be to do the same for parasites.

Enacting strict pollution/carbon limits and mandatory circular economy everywhere in the world.

Researching, trialing and Enacting a sustainable post-capitalist system everywhere in the world.

Developing solar energy until covering global energy demands, including a power network that can transport energy from the sunny side and/or orbit everywhere.

The slightly more ambitious:

Establish self-sustainable colonies living on off-earth resources, most probably also situated off-earth.

Create a Dyson swarm with enough energy output for in-system exploration, mining, colonisation, and terraforming.

Perfect matter replicators.

I have some other ideas as well, but those would be a start.

Yeah, and although greedy, maybe not enough to ruffle feathers over.

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Mostly spam, porn, and recipes it seems from the traffic.

Heat is electromagnetic radiation - photons, sound is mechanical displacement - phonons.

They mostly propagate the same due to being waves, in most other respects they are very different.

Heat convection is an entirely separate process where heat radiation is aided by the movement of the surrounding medium. Where it would otherwise heat up it’s environment, convection keeps the environment from heating up. Compare coffee in a thermos (very little convection) to a cup you’re blowing on (significant convection); more air movement - more cooling.

Also, destructive interference does not at all work like that.

Maybe a more useful analogy could be that waves have like walking animations, where in part of the animation they go up, and in another part they go down. Destructive interference happens when a wave in its’ “up” phase crosses a wave in it’s “down”, meaning the resulting movement looks like nothing. The waves don’t however interact in any way, and will continue on their way and on their own animation cycles.

The shifting and heating parts are technically true but require very specific circumstances, enough so that I’m more prone to believe it’s another misunderstanding of the physics behind this. But I’ll give you the benefit of the doubt.

Yeah, I’m sure you’re right

Unfortunately I don’t agree.

Good reasons to omit details include brevity, legibility, pedagogy and scope.

Showing the supporting evidence for all steps in an evidence chain is simply not feasible, and we commonly have to accept that a certain presupposed level of knowledge as well as ambiguity is necessary. And much of the challenge is to be precise enough in the things that need precision.

You’re right to be sceptical until more data is presented, but saying no claim of progress is ever true is quite obviously a gross misrepresentation of our current reality. You are doing this on digital devices interconnected with millions of users ar staggering speed and latency. Every part of which are scientific claims.

There’s a relevant physics anomaly called a Helmholtz resonator, or more broadly waveform interference.

🤣

It’s always worthwhile to learn new things!

And programming is a tool, so it’s typically made to be clear how to use it, although of course people will differ on what needs to be clarified the most.

My experience is that there’s way too much discussion in what tool to pick, it doesn’t matter that much and almost all of the common languages will allow you to do all the things. And even though some will be better adapted for certain applications, it’s easy to pick up the new tool when relevant, and you’ll be that much ahead by being well versed in one.

As for how to learn, I find that you kind of need to figure out the basic syntax in each language (loops, conditionals, output, memory management, typology, lists, function calling, maybe classes/libraries if you’re fancy), and then start doing projects.

A nice intro for C# is the C# Player’s Guide by R B Whitaker, using some gamification and storytelling to get you through the basics, and even leave you prepared to tackle your first projects (by practicing design philosophy, how to break down projects, etc).

Otherwise, Python is a lot of fun, it’s made to be very easy to jump into, and then it’s fully featured to do anything you’d like it to. Unfortunately all my resources for it are in my local language, but it has many many users so I’m sure there’s great resources to be found in your own language.

I understand that this information is against your internal narrative, but a quick look at data for 2021 shows:

One in two women and one in five men felt unsafe walking alone after dark in a busy public place.

And data from 2022 shows 45% for the same measure.

As for harassment:

2022 - 55% of women 16-34 felt harassed

2021 - Three out of five, 60% felt harassed during the year.

Twice as many women reported being harassed as men, and several reported changing their behaviour because of harassment.

This is also echoed in international studies over multiple cultures. Women are much more often harassed than men, almost exclusively by men, and have more limited freedoms, expressions and rights than men.

This is not controversial, it is well established in study after study, there is an actual right answer to this, and it’s not the one you’re proposing.

How is it that you keep ignoring data when faced with it, and instead of presenting supportive data resort to arguing feelings and whataboutisms?

Edit: Link to 2022 raw data