In high school one of my classmates was named Benjamin Dover.

Also had a classmate named Ma Deek.

We call it the “Mens” category, but for all intents and purposes it is the same as an “open to all genders” category.

Female athletes don’t compete in it because they’re physically not strong enough to even qualify to compete in it at the world level. The gender they identify as or were assigned at birth is irrelevant. There’s no genetic testing requirement to compete at the men’s level.

In almost every sport, the world record performance from a women isn’t even good enough to meet the minimum bar for quality to compete in the men’s competitions at the world level.

Even sports like diving where you’re judged more than measured, the male athletes strength makes it possible for them to do things the female athletes simply can’t.

There was a time when they only was open to all competition, adding a protected women’s only category was to make it fair for women. And then we started calling the open category the men’s category.

We could call it the open category and the low-T category instead, and it would have the exact same participants in each.

Found the Canadian.

I got a 2400 baud modem and thought it was so cool that I didn’t need to use an acoustic coupler

The fastest a woman has ever run the 100m dash is 10.49 seconds.

The Olympic qualifying time, that all runners needed to beat to even complete in men’s 100m dash this year was 10.00 seconds.

If we didn’t have a women’s division, there couldn’t be women in sports.

Tesla’s biggest issue is Musk.

Tesla held a commanding lead over the other automakers in the self-driving segment a few years ago. Now they’ve all mostly caught up thanks to Musk’s unhinged firings. Tesla lost some of its best talent for no other reason than not wanting to work for an egomaniacal billionaire nut job.

Tesla needs to fire Musk before he runs it into the ground just like he’s done to Twitter.

Genuinely curious, what new features did that updated firmware have that were valuable to you?

“Green Hydrogen” is made by using electricity to split water into hydrogen and oxygen. There’re no carbon emissions in that process, but to be truly “green” the electricity must come from a carbon free source like wind, solar, nuclear, or hydroelectric.

The process of electricity to hydrogen to compressed hydrogen to fuel cell to electricity is about half as energy efficient as electricity to li ion battery to electricity. As a form of electricity storage green hydrogen is significantly less efficient than batteries.

Green hydrogen only makes sense as a fuel in situations where batteries are not feasible.

And right now making green hydrogen at all does not make sense because if you build a new low carbon source of electricity it will make a larger impact if you use it to displace fossil fuel based electricity generation rather than using it to create green hydrogen.

Don’t worry he wasn’t lying to you, he was just presenting alternative facts .

Your math checks out.

Charging a 600 mi battery in 9 minutes would require a charging station that can output somewhere north of 1.2 MW.

We need major upgrades to the electrical grid as well as doubling our electricity generation capacity for charging stations and vehicles like that to be common place.

It’s not like the country was massively relying on nuclear energy at any point in time really.

Germany’s 17 nuclear reactors were generating almost 30% of its electricity a decade ago before they started phasing them out. It was their second largest source of electricity after coal.

Despite having built literally 100s of solar and wind farms in the past decade they still had to increase their coal output by 40 TWh to make up for the gap. A nuclear reactor generates a fuck ton of electricity.

And for what? Statically speaking 800x more people are killed in coal mining accidents per TWh generated than are killed by all nuclear power accidents combined. They phased out their largest source of carbonless electricity and the decision likely killed more people than would have died even if there was a nuclear accident.

I remember a time when ads weren’t crazy intrusive. They weren’t being shoved into every os and app and website.

There wasn’t 20 of them on every page, and advertisers weren’t trying to harvest my data to the point where they knew every last detail of my personal life.

And I didn’t mind having them in order to have “free” content. But they got greedy and now I’ll block them in every chance I get.

Maybe forcing ads into everything isn’t the answer.

I’m an expert in consequential greenhouse gas accounting. Which is the sub discipline of GHG accounting that specializes in understanding how policies and decisions impact global GHG emissions.

You’re not wrong.

Wholesale prices do bounce around significantly in a day, occasionally even going negative. And some miners do shutdown for brief periods during high demand due to a high electricity price. Some miners aren’t buying electricity from the grid, and have their own generation sources with different economic inputs. And there’s lots of day to day volatility in mining rates that has nothing to do with economics.

There’s no formula or methodology that could tell you how much energy is being wasted at any given moment. That impossible. There’s no way of knowing how many miners are operating globally at any given point in time. We can’t even reliably tell which country a block was mined in. We can only make reasonable estimates of global averages over the last few weeks.

You can get closer with more detailed modelling, but the equation I gave using global averages for bitcoin and electricity prices in the last few weeks will get you to an accurate estimate.

Yes somewhat… the formula has several factors that are constantly in flux, Bitcoin mining is a random process the value can be off entirely by chance. But it’s designed to self-adjust over the long run towards that formula, individual fluctuations cancel out in the long run.

For electricity price specifically, wholesale prices of electricity tend to be fairly close everywhere bitcoin is mined. Bitcoin mining is more profitable where electricity is the cheapest and is uneconomic in places where the price of electricity is above average. So it only happens where the wholesale price is globally competitive.

The economics of Bitcoin mining at scale force it to find an equilibrium where the cost of mining a Bitcoin is just a bit less than the current market value of a Bitcoin.

Electricity is the only significant variable cost at scale so the amount of electricity needed to mine a bitcoin ends up being a little less than however much a bitcoin can buy.

Thus one can estimate the total amount of electricity very accurately by simply taking the block rate (6/hr) times the block reward (~6.25 BTC) times the current price of a bitcoin divided by the wholesale price of electricity. You’ll get the upper bound for the amount of electricity being consumed.

Which by the way works out to around a TWh costing tens of millions of USD every single day. Which is more electricity than a small country

The only thing that will stop the waste is if the price of bitcoin drops. You can legislate it away, that won’t stop it, it will just move when it’s happening.

Lots of great answers here.

I think one under mentioned cause is the effect of social media algorithms.

All major social media platforms use machine learning algorithms decide what to show in your feed. The algorithms are programmed to show you the things that have historically kept you on the site longer.

It’s human nature to upvote/read/support/engage with the things that agree with our world views, and downvote/dismiss/disengage/discredit the things that disagree with our worldview.

These two facts combined result in you seeing more of the content that aligns with your worldview, and more of the content from people who share your worldview. We’re all funnelled into communities of like minded individuals that repeat what we already believe, reinforcing whatever that is regardless of how factually correct it might be.

Dissenting information that might cause you to reconsider your position or become more politically aware is automatically filtered out.

And it’s not just social media either, even the algorithms behind search engines display this behaviour.

Long before social media existed, Google was tailoring search results to match the things you tend to click on. If you searched for news and typically clicked on the headlines biased towards one side or the other Google would start ranking site with that bias higher.

This wasn’t intentional (at least not originally) it was just a side effect of the algorithm, trying to figure out what you were most likely looking for.

For someone who, for example, believes the Earth is flat. If they were to type “is the Earth flat?” Into a search engine. They are much more likely to get results that “prove” the Earth is flat, then a person who believes the Earth is round, because the algorithm knows that they tend to click on articles that “confirm” the earth is flat.

Algorithms used by social media and search engines today, make it genuinely difficult to maintain a balanced worldview and find unbiased answers to any question. They are all designed to keep you engaged, And it is human nature to engage more with the things we agree with, regardless of truth.

The old 8” floppy disks were more expensive but known for being incredibly reliable.

The newer 5.25” and 3.5” floppies used cheaper and mass produced coatings on the magnetic surface, plus the smaller and higher density tracks had less surface area per byte and less material to hold the signal.

The net result was the newer floppies often couldn’t be reliably read after a few years of use.

It’s not at all surprising they stuck with the more reliable system for so long.

There’s a manual release that can be used to open the hood from the outside even if the vehicle has no power.

It’s a safety feature for first responders, as also under the hood is a loop of wire that can be cut to permanently disable the high voltage curcuts prior cutting open the car with saws.

There is a manual door release that works without power, but only from the inside. She had just loaded the child in their car seat, shut the door then went to the driver door to get in and couldn’t open it.

The doors are on the 12V side of the system, you can use jumper cables to connect an external battery from another vehicle (including ICE vehicles) to power the door under normal circumstances. But with a kid trapped in the car in AZ, I wouldn’t wait for that either.

It a pretty rare combinations of circumstances, but there’s something to be said for manual keys still used on other vehicles with keyless entry.