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Ask HN: What's an unsolved problem in your field?

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Re: Ask HN: What's an unsolved problem in your field?

#81

> The length of pi is continually increasing, and there doesn't appear to be an end. Huh? How is this an unsolved problem? It's known that pi is an irrational number, so it doesn't have an "end". We can always compute more digits. Or did you mean something different?

Definitely a bad example on my part.

I'd love to say I meant something different, but I simply blanked on pi being irrational.

Re: Ask HN: What's an unsolved problem in your field?

#82
post #81

> The length of pi is continually increasing, and there doesn't appear to be an end. Huh? How is this an unsolved problem? It's known that pi is an irrational number, so it doesn't have an "end". We can always compute more digits. Or did you mean something different?

Definitely a bad example on my part. I'd love to say I meant something different, but I simply blanked on pi being irrational.

It happens :) You did pose a very interesting question!

Re: Ask HN: What's an unsolved problem in your field?

#83
post #24

> The length of pi is continually increasing, and there doesn't appear to be an end. Huh? How is this an unsolved problem? It's known that pi is an irrational number, so it doesn't have an "end". We can always compute more digits. Or did you mean something different?

Not sure on the customer service one either. The same logic means calling privacy policies a problem because we legally have to follow privacy law? Warranties are there for consumer protection. Most people know what they're there for. Even if some people didn't understand it, businesses that treat warranty as "something we legally have to do" probably don't consider the confusion about warranty a problem, because cla…

In regards to warranties, it can be difficult to explain that service will cost money after a year for instance.

Especially when it's an issue a customer didn't directly cause (i.e. spontaneous part failure).

Re: Ask HN: What's an unsolved problem in your field?

#84
post #54

Energy simulation: whether a convolution using kernel A on top of a thresholded convolution using kernel B can be represented using just one convolution using kernel C. i.e. with H as Heaviside operator, T the threshold, and * the convolution operator, prove that the following can hold for some kernels A,B,C and signal D: A * H[B * D-T] = C*D

Not C * (D-T)? If the idea is to combine the thresholding and the kernel wouldn't it be easier to start with combining B and T first? E.g. B * D-T = B' * D?

Once you have two kernels (no thresholding), combining them is fairly straightforward, I think (assuming no singularities). However, I primarily work with straight convolutions for signal processing, not thresholded convolutions, so maybe I am missing something. If so, I'd be happy to learn more!

Re: Ask HN: What's an unsolved problem in your field?

#85
post #29

Earlier quoted context omitted.

Giving OP the benefit of the doubt here, it seems like a straw man example off the top of their head, just to throw some ideas out there.

Is OP schizophrenic? Can wr please stop this theirs b llsh t. Write his or her if you want to be PC. Otherse you are right

You missed that battle by a few hundred years, sorry.

Re: Ask HN: What's an unsolved problem in your field?

#86
Physics: Quantum Gravity - Quantum Field Theory does not combine well with General Relativity

Physics/Astrophysics/Cosmology: Dark Matter and Dark Energy - are clearly observed, no satisfactory explanation exists.

Astrophysics (and Science in general?): very knowledgable specialized domain experts have issues learning from each other: too many different concepts, relations, methods. Even if universe is shared, representations are not easy to map on it at once. Astrophysics is especially bad in this.

Re: Ask HN: What's an unsolved problem in your field?

#87
post #74

Earlier quoted context omitted.

Lucky 10000: Some 1-2% of the population is neither male nor female. Hope this helps: https://en.wikipedia.org/wiki/Intersex

1-2% includes people who have extremely minor deviations from the norm and requires you to use the most strict biological definitions of 'male' or 'female' that we could possibly use. The vast majority of these 1-2% are still easily assigned a gender. From your wikipedia article- > If you ask experts at medical centers how often a child is born so noticeably atypical in terms of genitalia that a specialist in sex dif…

How courteous of you to assign gender definitions to people based on their chromosomes! Binary gender theory is the tail wagging the dog; it's backwards reasoning used to prop up outdated cultural beliefs.

Re: Ask HN: What's an unsolved problem in your field?

#88

Software development: creating web CRUD interfaces quickly. Here's the orders table, here's the customers table, here's the products table. Join them, present them with a nice UI that scales down to basic smartphones, make some fields editable, some sortable, some filterable. Now take a subset of the result and make that its own table with a search form, and so on. Every solution I've tried is either too narrow (e.g.…

How would this work in practice though? Sorry if the question seems dumb.

For your own example : orders, customers and products. How would you generate a UI that matches design decisions of your product? Without specifying super detailed rules, in which case you could write it yourself? What am I missing?

Re: Ask HN: What's an unsolved problem in your field?

#90
post #74

Earlier quoted context omitted.

1-2% includes people who have extremely minor deviations from the norm and requires you to use the most strict biological definitions of 'male' or 'female' that we could possibly use. The vast majority of these 1-2% are still easily assigned a gender. From your wikipedia article- > If you ask experts at medical centers how often a child is born so noticeably atypical in terms of genitalia that a specialist in sex dif…

How courteous of you to assign gender definitions to people based on their chromosomes! Binary gender theory is the tail wagging the dog; it's backwards reasoning used to prop up outdated cultural beliefs.

Those people who need their chromosomes analyzed are part of the 0.07-0.05%, not the 1-2%

I imagine we would agree about the importance of respectful social interaction with those who don't fit within gender norms. I'm probably on your side here, but it's important to have these discussions using good facts.

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