Want to read Slashdot from your mobile device? Point it at m.slashdot.org and keep reading!

 



Forgot your password?
typodupeerror

Comment Re:What is intelligence? (Score 1) 74

And this is the primary reason why the definition of "artificial intelligence" remains a perpetual moving target.

It's not a moving target at all. The term was coined in 1955, and its accepted definition hasn't changed the slightest bit in the 70 years since. It comes from the proposal for the Dartmouth Summer Research Project on Artificial Intelligence. Here is how they defined it.

For the present purpose the artificial intelligence problem is taken to be that of making a machine behave in ways that would be called intelligent if a human were so behaving.

That is still exactly what practitioners in the field take it to mean. If you come across other definitions, that's people making up their own definition because they don't know how the field has defined it for 70 years.

Two important points about this definition. First, artificial intelligence is defined as intelligent behavior. If a machine behaves intelligently than it is intelligent. How that behavior is implemented doesn't matter. Second, if a machine can do anything a human can do then by definition it's as intelligent as the human.

These ideas were strongly influenced by Turing's "imitation game" (now known as the Turing test) that he published five years earlier.

Comment What is intelligence? (Score 2) 74

I challenge anyone to come up with a definition of intelligence that 1) is clearly satisfied by humans, 2) is clearly not satisfied by current AI, and 3) isn't totally contrived (like defining intelligence as "the ability of humans to...").

Here are some common definitions of intelligence.

"The ability to take in information and make decisions based on it." Computers do that.

"The ability to solve problems." Computers do that.

"The ability to predict the consequences of your actions." Computers do that.

"The ability to understand complex subjects." Humans often speak or reason about things without really understanding them. For examples, see the comments thread on any slashdot story. Besides, "understand" is another word that doesn't have a clear definition.

If you believe AI isn't intelligent then how do you define intelligence? Are you absolutely certain AI doesn't satisfy your definition? Are you absolutely certain that humans do? And if you answered yes to both, is it a contrived definition that doesn't match how most people use the word?

Comment Re:Good (Score 2) 174

The difference between anecdote and data is a clip board.

I hope you meant that as a joke! If not, it's wrong in so many different ways.

The difference between data and anecdotes is that data is sampled from a probability distribution. By looking at the samples, you can learn about the distribution they're drawn from. That lets you make predictions about future observations drawn from the same distribution.

Anecdotes are chosen individually. They don't reflect any probability distribution. They don't let you predict future observations.

Comment Re:They should plan for (Score 1) 79

It goes deeper than that. For many years, the air force literally told officers that UFOs were real, that there was a secret program to reverse engineer them, and that they would be arrested if they ever said a word to anyone. It was basically a hazing ritual. This article has a great discussion of it. Here's a bit of it.

For decades, certain new commanders of the Air Force's most classified programs, as part of their induction briefings, would be handed a piece of paper with a photo of what looked like a flying saucer. The craft was described as an antigravity maneuvering vehicle.

The officers were told that the program they were joining, dubbed Yankee Blue, was part of an effort to reverse-engineer the technology on the craft. They were told never to mention it again. Many never learned it was fake. Kirkpatrick found the practice had begun decades before, and appeared to continue still. The defense secretary's office sent a memo out across the service in the spring of 2023 ordering the practice to stop immediately, but the damage was done.

Investigators are still trying to determine why officers had misled subordinates, whether as some type of loyalty test, a more deliberate attempt to deceive or something else.

Comment Re:Energy matters, not electricity (Score 1) 168

Not quite as bad as that. Average power plant efficiency is now about 39%. Cogeneration can further improve it by capturing the heat and using it for useful things.

ICE cars are even worse though, sometimes as low as 20%.

This is also why the transition to renewables is so important. If your generator doesn't use fuel and doesn't produce CO2, the question of how much fuel it wasted or how much CO2 it produced is moot.

Comment Re:Why reframe the original article title? (Score 1) 168

People keep claiming wind and solar are far cheaper than gas or coal, but they never give any evidence, and they are not.

I just searched for "cost of energy sources", and it took me less than one minute to find the data. Here you go. There's a graph right at the top helpfully showing you how they compare, and how the costs have changed with time.

I bet you could have found it just as quickly if you'd bothered to look. See my signature quote.

Comment Energy matters, not electricity (Score 1) 168

Electricity is the wrong number to look at. Total energy is what matters.

If you replace an ICE car with an EV, you'll use less energy but more electricity. Same if you replace a gas furnace with a heat pump, or a gas stove with an electric one. Looking only at electricity makes all these things look bad, when in fact they're good.

Comment Re:Breakthrough Technologies We Need (Score 4, Funny) 60

"Gorilla Glass" Automobile Windshields

In an accident you don't need the windshield to resist breaking. You need it to fragment into tiny bits that can't impale you. Auto glass is well designed for the purpose.

Sturdy Umbrellas

Let's stick to technologies that might actually be possible, not crazy fantasies!

Comment Re:Sodium ion batteries.... (Score 3, Insightful) 60

There are different levels of rare. Lithium isn't platinum, but it's not sodium either. I keep a tub of salt (50% sodium) in my kitchen cupboard. It's dirt cheap. Lithium can't compete with it on price.

Sodium can't match lithium on mass, but like the article says, the bigger use is for grid storage. Weight doesn't matter much if you aren't carrying the batteries around with you. Using sodium for grid storage makes it cheaper, and frees up lithium for cars.

Comment And that's in a La Nina year (Score 3, Interesting) 75

To realize just how insane this is, consider that we had weak La Nina conditions for much of 2025. That means it should have been a slightly cooler than average year. And it was the second hottest year ever recorded.

That tells you just how quickly the climate is changing. 2023 had a strong El Nino. A cooler than average year today is as warm as a hotter than average year two years ago, and much hotter than an average year was three years ago.

Comment Re:Humans are the biggest cause of global warming (Score 1) 75

per head of population basis, the USA is the worst polluter.

Not even close. The US is number 16, with per-capita emissions less that 1/4 of the worst country. All the worse countries are smaller, which is why the US has higher total emissions. They aren't tiny though. Russia, Canada, Australia, and Saudi Arabia all have higher per-capita emissions.

Slashdot Top Deals

Did you know that if you took all the economists in the world and lined them up end to end, they'd still point in the wrong direction?

Working...