Recent submissions

Comment · 4 years ago
All of HN is rate limited in posting, no?
Comment · 4 years ago
Ummm… I do. It’s not a hard b sound, but it is there. It sort of moves the location of the “t” sound down towards a “b.” It defiantly does not sound like “det”.

And I distinctly pronounce the “b” in “plumber” (another example in the article.

Comment · 4 years ago
In the 80’s? What CS classes.
Comment · 4 years ago
The law of the excluded middle is also known as the “sandwich theorem” because it drives directly from a physical observation. I happen to agree with the constructionists that mathematics is better formulated without it, but it is most definitely a rule derived from analogy to the physical world.

As a physicist myself, I’ll tell you that there isn’t a single one which believes that the universe doesn’t operate according to knowable rules. That’s kinda the definition of what it means to be a physicist.

Comment · 4 years ago
Because the Chinese economy collapsing affects business everywhere.
Comment · 4 years ago
Comment · 4 years ago
Math is fundamentally a description of the physical world. Mathematicians don’t like to hear this because they have their own ideas about the platonic realm of math, but it is true. We can debate which logical rules or axioms to include, but fundamentally any math has to have some sort of rules for deductive reasoning, which carry over from observation about the physical world: effects have antecedents, with a causal link between the two.

Now we have gone from that to the present day when we have maths which aren’t yet found to align with physical reality. So I can see why people want to say that it is a mental construction. But still, even these abstract maths operate according to rules we derived from the physical universe.

Comment · 4 years ago
Well said. The headline is bonkers…
Comment · 4 years ago
There’s not that much radiation in this water. None of those concerns would apply. They could literally just dump it into the ocean without measurable effect, which is the plan of record.
Comment · 4 years ago
It is literally two things connected by a rope. A tether-based spun spacecraft is trivial from an engineering perspective, and can have as large a radius as you need to avoid differential “gravity” effects.
Comment · 4 years ago
Good thing there’s no Strontium-90 in this water. The only thing it contains is trace amounts of titrium. Which could be safely dumped in the ocean.
Comment · 4 years ago
They have literally hundreds of these tanks. They were building them every few days.

Doesn’t take away from your main point though.

Comment · 4 years ago
Did you live during the Cold War? I struggle to understand why someone would want to live under that constant existential threat of nuclear annihilation.
Comment · 4 years ago
Spin the spacecraft. Done.

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