Of course not, that would be immoral. They’ll track trollies and baskets, then tag it to the till and your loyalty card. It would be a lot more consistent, and harder to dodge.

I can see multiple uses for the tech. Unfortunately, many are a but dystopian, but some are legitimately useful.

It was the initial description used in my 1st year physics degree course. Not sure if it has an explicit name. We also jumped fairly quickly from there to the maths.

Basically space time can stretch infinitely, and flows towards mass. Anything on that spacetime is drawn along. It’s functionally identical to a standard force. Straight lines twist into spacetime spirals (aka orbits etc).

Physics has lots of interesting mental models for different things. Unfortunately, most are flawed, so dont lean on tgem too hard. What actually happens is way beyond what our monkey brains can interpret. The best we can do if follow the maths, and try and fit something to the end result.

It’s worth noting that spacetime isn’t static. Space “flows” into mass. It’s akin to a treadmill, you need to constantly move “upwards” to stay in place.

This is also the reason that uniform gravity, and acceleration are identical. With acceleration, the “ground” is constantly moving upwards into new space, pushing you along. With gravity, space is constantly moving down through the floor, trying to push you into the floor. It’s functionally the same thing.

I’ve still got about 100 or so of them. I was mass printing them as part of a coordinated project. We basically managed to saturate the local area with them. Once demand suddenly stopped, I was left with the next batch ready to go. I’ve still to find a good use for them.

I flew on an a380 recently. They actually used zoned boarding! The number of people who didn’t seem to get that they wouldn’t be allowed to board till their zone came up was amusing.

It saved a huge amount of time.

I’ve found I like interpretating phrase “common sense” akin to this scene, from blazing saddles.

https://youtu.be/KHJbSvidohg

I prefer the version. “If you smell shit, check the floor. If you constantly smell shit, check your shoes.”

It’s a reminder that a 1 off problem is likely external to you. If the problem seems to follow you around, it’s likely attached to you.

It doesn’t deny that the problem could still be external, but not to externalise things unless you are sure you’re not causing it.

I tend to prefer pass phrases, they are a lot easier to type and speak, if required. Mine regularly blow past 20 characters.

As for salting, that only defends against rainbow table attacks. The salt needs to be stored along with the hash. That is find for most accounts, but once you’re in banking territory, that’s a bad bet.

You also can’t assume you have no vulnerabilities. If someone gets your database, you can’t defend against brute force attacks.

Lastly, if you are doing passwords properly, you shouldn’t care much about length. There are a few dos attacks to worry about, but a 512 char limit will stop those, and not limit any sane password.

Exposure can cause similar effects. However, the act of heating the plastic to the temperatures needed to melt it and defirming it also damages the structure. It’s particularly obvious with pla, but all plastics suffer from it, to an extent.

Repeating plastics tends to damage them on a chemical level. The polymer chains break and shorten. This ends with the plastic being more brittle. Since 3d printed parts have already been remelted once, they have even more degradation than injection moulded parts.

I believe the recommended amount of recycled plastic is around 30% for PLA. Any more and the parts lose significant strength.

I personally would prefer us to accept that plastics aren’t really recyclable. It’s better to move towards renewable plastics like PLA, and treat the waste as biomass (either composted or burnt for energy.

I don’t know if it’s real or just nostalgia, but reddit is massively worse than I remember. I’ve gone back to nose a few times, and it feels like a ghost town, compared to what it used to be.

While I have an inner monologue, I’m also able to shut it down and still think. The inner voice is likely an artefact of how we learn. So much learning is done by voice instruction that it becomes the default for most people.

Most phones can open the camera without unlocking the phone. This makes it an easy prank source when someone leaves there phone unattended. Many a friend, acquaintance, or random stranger, has ended up with random selfies of me in their photos. (Generally just before i ask who misplaced their phone)

The other one is adding a few selfies when you offer to take a group photo for people.

HDDs can be made tolerant to it. Constant rotation still puts significant extra strain on the bearings, when spinning however. The drive will likely fail faster than an SSD.

Your best bet might be to use a laptop as the basis. They are already designed with power efficiency in mind, and you won’t need an external screen and keyboard for local problem solving.

I would also consider having a raspberry pi 3 or similar as a companion. Services that must be up all the time run on the pi (e.g. network admin). The main computer only gets kicked out of sleep mode when required. The pi 3 needs less power than the newer pis, while still having enough computing power to not lag unless pushed hard.

I definitely agree with SSDs. HDDs don’t do well when rotated when running. Boats are less than a stable platform.

In short, Facebook are incentivised to increase conflict and hate, it improves user engagement. They have also leveraged their large user base to boost numbers in threads significantly. Threads is already a cess pip of bigotry and hate.

Federating with them would be like connecting your house’s drinking water pipe with the sewage pipe of an industrial pig farm. It would pollute our community to the point of destruction.

They might try and control this initially. Unfortunately, it would almost certainly be part of an embrace, extend, extinguish attempt. ( https://en.m.wikipedia.org/wiki/Embrace,_extend,_and_extinguish ). They play nice till they have control of enough communities, then they stop the controls, to increase profits.

Life will almost certainly be fairly common, given the right conditions. On earth, it seems to have appeared not long after conditions made it possible. We either won the lottery on the first week, or the odds aren’t actually that bad.

The problem is, we can’t detect life right now. We can only see potential communicating civilisations. These are a lot rarer. We currently know of 1, humanity. That will change in the next few years. We have telescopes being designed/built capable of detecting the gasses in the atmosphere of an earth sized planet. While we won’t recognise all life types this way, a lot will show up in abnormal gasses, e.g. free oxygen. This should help bound the possibilities a lot.

Even more so, the moon is slowly moving away from the earth. A couple of million years ago, it would have completely covered the sun. In a couple of million years, it will not fully cover the disc.

A million years is a long time for humanity, but a blink on the timescale of moons and stars. We didn’t just luck out with the moon’s large size, but also with the timing of our evolution.

I don’t think there is a single filter. My personal gut feeling however is that the jump to “specialised generalists” would be a major hurdle.

Early human civilizations are very prone to collapsing. A few bad years of rain, or an unexpected change of temperature would effectively destroy them. Making the jump from nomadic tribal to a civilisation capable of supporting the specialists needed for technology is apparently extremely fragile.

Earth also has an interesting curiosity. Our moon is extremely large, compared to earth. It also acts as a gyroscopic stabiliser. This keeps the earth from wobbling on its axis. Such a wobble would be devastating for a civilisation making the jump to technological. Even on earth, we are in a period of abnormal stability.

I suspect a good number of civilizations bottleneck at this jump. They might be capable of making the shift, but get knocked back down each time it starts to happen.