Follow Slashdot stories on Twitter

 



Forgot your password?
typodupeerror

Comment Re:Misleading header, eventually WILL collide (Score 1) 51

Anyone got an explanation or best theory?

It's called "dynamical friction". Not actual rubbing on things, but if you take an object moving along past a bunch of other objects, and they're all attacting each other via gravity, you get a net force opposite the direction of movement by the combination of all the "slingshot effects" from all the other bodies.

Wikipedia doesn't have a cartoon of this, if I only had a blackboard. Let's see if I can google up a cartoon.... Aha! This is 2025, of course there's a good youtube talk

about it.

Comment Re:In before ... (Score 1) 159

My wife has a PHEV. From a usability standpoint, a nice compromise, driving around town for daily use remains the "almost free" electrical, and road trips are the same "don't have to think about it because gas stations are every exit" thing. From a maintenance standpoint, you've now got two sets of complexities in the car, but if everything works right, it's just extra oil change money. Less power and torque than a BEV, because the electric motors are smaller, but more get up and go than the non-PHEV hybrid, because the motors have to be big enough to rely on.

Comment Re:In before ... (Score 1) 159

Here's my two big reasons, neither of which you list.

  • It drives great: super acceleration, super smooth, quiet, fast. Roomier inside than it would be if it were carrying around all the ICE baggage (for the same sized body shell).
  • Save money. Not from the feds, mine didn't qualify for that protectionist rebate. Charges up for $5-$10 a "tank" overnight in my garage. Don't have to spend any time at gas stations, unless on a roadtrip (in which case it costs the same as gas and takes a little longer, accounting for food and bathroom). Nearly free of maintenance costs.

But wait, you say, you paid more in the first place! Isn't there at least a break-even time? I suppose. I did pay more than the median US car price. But see the first point: I wasn't in the market for an econobox. I couldn't have gotten an ICE car that performs that well without spending a lot more than I did (that would take at least 2x the median price), so saved money up front in addition to gas and maintenance long term. And, I really like the looks of this one (an EV6). Sorry you don't like any of them, but that's a totally subjective criterion.

Comment Re:And it's cheap? (Score 1) 104

There exists satellite data to track methane and CO2 concentrations on the map: the Finns don't have to trust the CCP.

For now. Till the head-in-the-sand people in charge of things in DC notice that there's one more dataset they're involved with that contradicts the party line and must be taken offline.

Comment Re:AI isn’t the problem - assessment methods (Score 1) 160

Physics prof in the US here. I do give tests in person with pencil and paper.

Students have homework and in class work to learn how to solve the problems. Some fraction of them cheat their way through these practice assignments to farm the ~10% of their grade they're worth.

Those that cheat then get mulched on the test. And then bitterly complain on their student evaluations that they're being tested on stuff that wasn't in the class: because they have no idea what was in the class bits they cut-n-paste or looked up and copied down.

Comment Re:how many are just in for the piece of paper jus (Score 2) 131

Huh? As a professor, I've got to put "date of last attendance" down with any failing grade, so that people trying to scam the system (or just power slacking) don't get their financial aid. And if you withdraw early on (or, as in TFA, are booted) that flag is obvious. Plus, a withdraw in the first week or two cancels out a lot of the tuition bill, so shouldn't even generate financial to to pay the (now much smaller) outstanding bill.

Even if the aid is going into the student account right away, you don't have extra you can pull out till after bills are due later in the semester?

Maybe the scam as described works; but there are scheduling tools in place to prevent it, so somebody's not trying too hard over in the registrar's office if this is actually working.

Comment Re:Where have all the Russian/Chinese trolls gone? (Score 1) 213

Not a long time passing, but I was rather surprised to see a relatively reasonable discussion of the sensitive topic. The "usual suspects" AKA probable sock puppets were taking the day off? Celebrating Easter? Hmm... I don't think that could be it. Russia is on a different religious calendar and Easter isn't a big thing in most parts of China...

Actually, this year both calendars are in synch, so it's Easter everywhere.

Comment Re:That's not how layoffs work (Score 2) 302

In a normal layoff mode, that's true. But this particular set of layoffs started off with "everyone who was hired or promoted in the past two years, and thus "probationary" is out".

So, the process started with a giant existing hole of anyone hired to meet some recent need, and also those who were doing well enough to have gotten promoted to a new position.

That's irrationality from the top, long before surviving middle managers have to see how to execute their cuts on what remains and inject their own irrationality.

Doing it carefully was last done in the Clinton administration. Which worked! Was one of the reasons that was the last time there wasn't a Federal deficit. And in the process, the various functions of government contineud to function. But, that process also took a lot of work, thought, and time (7 years), none of which are happening currently.

Comment Re:She's here on a visa - and visas can get cancel (Score 1) 61

There's due process for doing so, and that has not been followed. This is probably because in similar cases going back decades, when that process was followed, the courts (including the supreme court, including in cases of actual communist rabble rousers), has ruled that free speech is free speech and doesn't depend on one's visa status.

So, if this plays out as it has repeatedly in the past, her visa gets un-canceled. But, the point wasn't to get rid of one student who wrote an article. The point was to inflict fear in all the other students who might one day think about saying something out of line. The government using extra-legal fear as a weapon... that's the scary part for all of us.

Slashdot Top Deals

grep me no patterns and I'll tell you no lines.

Working...