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Comment Re:"While this is exciting news" (Score 2) 147

The expected answer means we will have cryptographic security available indefinitely.

I assume you're talking about asymmetric encryption. (Correctly used) OTP already gives perfect security symmetric encryption.

We may have to keep switching algorithms, but in principle there will always be an algorithm out there that can't be quickly bypassed.

Does this follow? AFAIAA all public key encryption requires a "trapdoor function" and I'm not aware of any that are NP Complete. Unless something has changed in the many years since I last looked at this that means that it's perfectly possible for P!=NP but there is no safe public key encryption method.

Evidence that P = NP (or one is a subset of the other) means all cryptography is doomed to fail.

I'm not sure even this is true for public key cryptography - what if factoring was found to be in P but with a polynomial of order 10^300. Then the RSA algorithm could be safe for sufficiently large primes even if P==NP

Comment Re:Leftovers (Score 2) 430

Huh? That double negatives means you wrote "he's one of the minority that is lactose tolerant", and there are too many cats who love (cow's) milk for that to make sense.

I have no idea about cats but it's perfectly possible for them to be lactose intolerant and also to like milk.

You will have no trouble getting a dog to eat normal chocolate - but it will kill the dog.

Comment Re:Leftovers (Score 3, Informative) 430

And my cat loves fruit and vegetables.

At the very least you should ensure that your cat's diet is fortified with Taurine. Much like humans need to eat fruit and veg in order to avoid scurvy, cats need meat and fish in order to get Taurine. (Cats produce their own vitamin C so do not need it in their diet. Ditto for humans and Taurine)

I'm surprised that your cat "loves fruit and vegetables." That might indicate that it's a very successful hunter and is getting plenty of fresh meat from birds and small mammals. Whether that is a bad thing probably depends on the environment that you live in.

Comment Re:The cost of the elevator is the floor space (Score 1) 213

Loading, unloading is still a problem. What about when everybody wants to leave at the end of the day? They'll all be stuck in cars waiting for the ground floor unload position to become free.

And what's the advantage of having two shafts and a parking space over having three shafts? Uses the same floor space.

Comment Re:The cost of the elevator is the floor space (Score 2) 213

The primary benefit is not the sideways thing.

I could imagine that the sideways thing could be the main benefit.

Imagine a ten story building with two lift shafts and 10 cars. In a quiescent state there's one car parked on each floor.

During light times, someone gets into a lift, the cars above or below move out of the way and then it travels to the required floor. The cars it has passed simultaneously shuffle up or down one floor and you're back to the quiescent state. In busy times there can be one up and one down shaft - but there doesn't need to be the same wait time, indeed the lifts could be positioned every other floor.

Biggest issue with this I can see is the loading/unloading time. Ideally you'd want to do something similar to the way some London underground stations work where people leaving the lift go out through a different door to those entering the lift. Which may defeat any space savings from having fewer lift shafts.

What I'm not sure about is whether the lift can safely move sideways while people are in it. Feels to me as though trying to stand in such a lift would be like trying to stand on a train or boat where the sideways forces require significant strength and coordination to remain standing unsupported.

If the cars have multiple doors then you could have four lift shafts in a square array and every car would have four available directions to move.

Of course, what you could do is open the doors and then rapidly move the lift sideways, ejecting the people out of the door (a-la pulling the table cloth off the table without disturbing what is on the table) and readying the lift for the next load ;-)

Comment Re:I suspect reverse causation (Score 1) 515

Now, why do companies use spaces over tabs? I'm not sure about that.

Because it's almost impossible to enforce consistent tab indenting. Apart from anything else you'll get passive-aggressive coders who will have a single tab at the start of every line and then use spaces.

So even if space's weren't the right choice, it wins politically as you can enforce a "no tabs" policy. (Makefiles excepted)

Comment Re:Who are the people on the graph using both?!? (Score 1) 515


<tab>this line...........//1 tab, 9 characters, 11 spaces to comment
<tab><tab>new level......//2 tabs, 9 characters, 6 spaces

Indenting only works when you have a fixed space (5 in this case) tab width.

Even if you decide to deny the ability to line up comments across different indent levels, I've not come across an editor that can correctly insert tabs and spaces into the blank line you add to get across to the RH side to continue your comment.

Comment Re:What happened next? (Score 1) 493

http://www.bbc.co.uk/news/elec...

Democratic Unionist Party (DUP)
The DUP is in favour of Northern Ireland leaving the EU but says that Brexit does not mean "leaving Europe".
It adds that it will prioritise maintaining the CTA between the UK and the Republic of Ireland.
Aims:
frictionless border with the Irish Republic; assisting those working or travelling in the other jurisdiction
Northern Ireland established as a hub for trade from the Irish Republic into the broader UK market
comprehensive free trade and customs agreement with the EU
arrangements to facilitate ease of movement of people, goods and services

Comprehensive free trade and customs agreement, ease of movement of people, goods and services doesn't sound hard brexit to me.

Comment Re:Bye Theresa (Score 1) 493

Indeed. But the LibDems also had the option to walk away and let the Tories form a minority government. The LibDems could have continued to support the Tories on an adhoc basis without agreeing to support them on tuition fees. The LibDems chose to sacrifice their headline policy to get a few cabinet ministers (and a PR referendum that the Tories were free to campaign against)

Comment Re:What happened next? (Score 1) 493

Let's face it - so do the Tories [want soft brexit]

No! That's the entire source of the utter mess we find ourselves in from DC agreeing to a referendum if he was elected PM right through to TM calling this general election.

The Tory party is split through the middle with hard brexiteers and remainers. All of this kerfuffle is down to the PM of the day trying to get some authority over one side or another.

If TM agrees to a "Norwegian" brexit for the DUP then she will be overthrown by the hard brexit corner of her party.

I really cannot see how we can get anything other than "no deal, WTO rules" or "please sir, can we stay in the game" come May 2019 - possibly we'll get to choose via a second referendum - because I don't see how any Tory PM can get any deal agreed with the EU accepted by the parliamentary Tory party.

Comment Re:What happened next? (Score 1) 493

Absolutely no chance.

Apart from the fact that Tory+DUP have 326 seats now which three seats still to declare.

Even if DUP refuses to support Tory, they'd never support Lab either so Labs best chance would be to win a no confidence vote and trigger yet another election (but that might not do what they want if their support is pro-europe and they see it as yet more delaying with no sight of anything other than a hard brexit looming)

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