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What did you learn today?

Google declares it's achieved 'quantum supremacy'.

Great! Now we can all get some sleep :wacky:

It would take the fastest computer 10,000 years to solve this problem — Google's computer did it in 200 seconds
  • It's the first time a computation has been performed on a quantum computer that couldn't be done on a conventional computer
  • However the computation itself won't help us solve any of the problems we want to use quantum computers to tackle
  • To do something useful with a quantum computer we need to create qubits that are less noisy
Conceptually, it's interesting … because it's the biggest indication yet that our current classical model of computing, built on the work of mathematicians like Alonzo Church and Alan Turing, isn't the full picture.

As the researchers describe in the paper, the Extended Church-Turing Thesis states that "any 'reasonable' model of computation can be efficiently simulated by a Turing machine".

It's the basis of all the computing we do, from the computer I'm writing this article on to the smartphone you might be reading it on.

What quantum computing does is that it says that the Extended Church-Turing Thesis is wrong.

"It's [been] the foundation of theoretical computer science for decades, so that's big news," Professor White said.


 
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In the past when I had to work on a toilet replacing parts and such, I used my wet/dry shop vac(paper filter removed) to suck up any residual water in the tank/bowl to make it easier to get started.

This week I was working on yard sprinklers. One of the one's I dug around leaked a bit of water into the hole. (Sorry, no pics)

It occurred to me that I could use the shop vac to suck up all the mud and water out of the hole and reduce the effort in getting everything clean enough to glue in a repair piece of pipe.

Sure enough, it worked great and made the repair go very smoothly since I didn't have to worry about keeping mud and water out of the fitting.:thumbsup:

Edit: Last week I used the same shop vac to save a wood floor (where the washer flexible water hose had burst).

Edit2: My wife uses it to vacuum our patio instead of sweeping.
 
Last edited:
In the past when I had to work on a toilet replacing parts and such, I used my wet/dry shop vac(paper filter removed) to suck up any residual water in the tank/bowl to make it easier to get started.

This week I was working on yard sprinklers. One of the one's I dug around leaked a bit of water into the hole. (Sorry, no pics)

It occurred to me that I could use the shop vac to suck up all the mud and water out of the hole and reduce the effort in getting everything clean enough to glue in a repair piece of pipe.

Sure enough, it worked great and made the repair go very smoothly since I didn't have to worry about keeping mud and water out of the fitting.:thumbsup:

Edit: Last week I used the same shop vac to save a wood floor (where the washer flexible water hose had burst).

Edit2: My wife uses it to vacuum our patio instead of sweeping.
Shop vacs are the duct tape of the cleaning world.
 
Every day, more than 10 million glasses of Guinness are drunk around the world. Annual sales of Guinness exceed more than 850 million litres – or roughly 1.5 billion imperial pints worth.

—————————————

In 1951, the Guinness Brewery’s managing director at the time, Sir Hugh Beaver, got into a petty argument at a pub over which was the fastest game bird in Europe. That inspired him to produce a book that could settle such pub debates – thus the Guinness Book of Records was born.

Originally intended as a marketing giveaway, the surprise success of the book let to a pretty huge publishing empire. How large? Big enough that it’s listed itself in the Guinness Book of Records as the best-selling copyrighted book of all time.
 

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