It goes really deep in terms of what it affects in physics.

These all died in obscurity. This blog post by contrast had a catchy title that HN actually engaged with, and as such is measurably superior.

Blame dang & co, for making forum software in which blogspam is the only way to add comment or meaningfully add context and editorialize. (Since blogspam is officially discouraged I’d say the software is not fit for purpose.)

Oh that’s easy enough. If they need a PIN it’s actually being run as a debit card over the debit card network. Otherwise it’s being run as a “check card” over the credit card network (with higher fees and better consumer protections). It’s just backed with money instead of a line of credit.

> Why do online stores need my name and address, but IRL ones do not?

IRL stores have access to the actual card (with your name) and having this artifact present makes it much less likely that you are a fraudulent fraudster committing fraud, so the processors are willing to take it.

> How can restaurants swipe my card now and charge me later?

the good news is if the store ever defrauds you, everyone knows where to find the store! Unlike fraudsters making purchases.

(Using a check, the very infrastructure we’ve been talking about!!)

https://youtu.be/Tflm9mttAAI

I think this one especially is simple enough of an error, and the consequences are so disastrous, that it’s reasonable to find it silly.

Comments URL: https://news.ycombinator.com/item?id=36791711

Points: 4

# Comments: 0

https://github.com/RupertBenWiser/Web-Environment-Integrity/...

Is this more or less energy than would be used for heating, in an equivalent city that seldom wants A/C? Remember, with the exception of heat pumps (hardly universal and less efficient at low temperatures) A/C is usually much more efficient at changing indoor temperatures, and also that 100F -> 72F is a smaller temperature difference than 32F -> 72F.

East Asian cultures are more about the shame. And try not to go anywhere where the social order is based on Fear.

One question, though, is whether they take that opportunity. Another more salient question is whether the Wall Street Journal, of all the possible papers, has fallen under the influence of such groups.

And it certainly seems as if they’ve found some people with elevated lead levels in blood, and ground and water samples that exceed EPA limits.

https://www.wsj.com/articles/lead-cables-telecoms-att-toxic-... https://archive.is/MA0wG

“Aerial lead cabling runs alongside more than 100 schools with about 48,000 students in total. More than 1,000 schools and child-care centers sit within half a mile of an underwater lead cable, according to a Journal analysis using data from research firm MCH Strategic Data.”

We took lead out of gas (except general aviation). Everyone who buys or rents an older home or even just buys paint at the hardware store is reminded of lead in paint. Most are aware of lead in pipes, especially where these pipes are present. Yet lead levels in children nationwide are still substantially higher than they should be given the mitigations that have already been done.

These cables are likely a huge portion of what’s left, and almost nobody has heard of them. Even when they’re right in front of your face hanging from a telephone pole.

The obvious downside being the extra expense of media conversion.

Naah, I wouldn’t do a thing that. I’ve lived in low-bike suburbs — hated it, but I know the score. :)

That rather depends on what you mean. The usual effect of increasing speed in a circular orbit at any given moment is to change it to an elliptical orbit, where the apoapsis is further away from the center of gravity and the object in question moves slower. And if you increase speed again at the apoapsis, you can make the orbit circular again, but the object will be moving much slower than it was to start. Thus two accelerations, both prograde, have the net effect of substantially reducing the prograde speed.

For any given circular orbit, though, lower means faster.

Oh, wait … you’re telling me they just phased that out? :(

But yeah, as it turns out energy prices matter; it’s not just corporate overlords of the fuel companies spreading astroturf when people point out the still-high costs of using renewables. It matters to homes and cars and industry too, and when energy costs more, the nation will have less.

You can also “slow light down” by just making it go further: a few clever mirrors will do this easily. This is even more of a cheat, as the light itself isn’t any slower, it just gets where it was going a little later because it went further.

In a sense that’s what’s happening here: the spacetime is being stretched on one axis and squeezed on another, as gravitational waves pass through it. It isn’t by much, which is why we need a whole galaxy to measure it.