blm · HackerTrans

When people talk of searching Hacker News they seem to use algolia: https://hn.algolia.com/. Does this help you?

I know you were talking about floating point. That is why I said what I said using python code. It seems to be a concrete representation of IEEE-754 math. Also from my reading and understanding numpy is written by scientists that understand IEEE-754 perhaps a little more than some others.

I was fully away of that stuff you say about how NaN is represented and was also aware of how Inf is represented. My statement and link to the concept of Infinity on mathforum was an effort to support the idea of why most math done with code involving Inf will also result in an answer of Inf.

The article that this whole discussion is about seems to think it is OK (ie not a bug) to convert a float like Inf to a integer do some math and convert back to a float and get 1.5 and that is OK. It seems like a bug to me.

blm

6년 전discuss

I think any conversation that says there is halfway between inf and 0 is treating inf like it is a fixed point and therefore a number and not a concept

This is why participating on Hacker News conversations are problematic. I think you are talking about downvoting because a persons misunderstands me. Even in your statement you imply by saying "but you never know" that it is possible people aren't being aware of the point I was making

blm

6년 전discuss

From Python:

    >>> import numpy as np
    >>> 1 + np.Inf
    inf
    >>> (0 + np.Inf)/2
    inf
    >>>

Infinity is not a number it is a concept[1] My math teacher used to say think of infinity like a impossibly large number. An impossibly large number divided by two is still an impossibly large number

[1] http://mathforum.org/dr.math/faq/faq.large.numbers.html

blm

6년 전discuss

I have a question

If this was true:

tan maps (0, π/2) onto (0, ∞), and tan(π/4) = 1

Wouldnt it imply that

tan(π/8) would be halfway between 0 and 1 ie .5?

By my calculations it is 0.414 or √2 - 1

ALso with:

• f(x) = x/(1 - x) maps (0, 1) onto (0, ∞), and f(1/2) = 1.

wouldnt this mean that f(0.25) is supposed to be half way between 0 and 1 or .5. However f(0.25) = 0.25/0.75 = 1/3

blm

6년 전discuss

Wouldnt spending money on infrastructure create need for people to be in the same physical location to do at least the manual work part of building infrastructure? Recent maintenance of electricity infrastructure in this street created a congregation of at least 8 people.

Also building infrastructure seems like a win win but after the infrastructure is built there is also a commitment to maintain the infrastructure. Isnt this like signing up for a recurring expense? Too often I think politicians and others think of it like a one off purchase to garner votes.

See this: https://www.strongtowns.org/journal/2019/4/30/my-city-has-ma...

blm

6년 전discuss

>> Don’t ever respond to a solicitation or a proposal on the phone. The urgency is a disguise.

> A disguise for what?

I think:

Something not quite right or something worse.

It's easier to get away with things when they aren't face to face. People often know when they are trying to get away with something and leak the truth or information about the truth in body language.

Also it is quicker to communicate over the phone. If they are desperate they can deliver a proposal( ask for stuff?) over the phone within a quicker time frame.

blm

6년 전discuss

Yep and the latest update seems to have fixed it. Sorry. didnt mean to cause extra work.

blm

6년 전discuss

I looked at one of the URLs https://www.chromestatus.com/feature/5088147346030592. It says:

  ******NOTE: There is currently a bug affecting Mac OSX and iOS 
  which causes SameSite=None cookies to be inadvertently treated 
  as SameSite=Strict and therefore not sent with cross-site 
  requests. (See https://bugs.webkit.org/show_bug.cgi?id=198181) 
  Until this is fixed, SameSite=None may not work properly on 
  Safari.******

Are all your Chrome users not MacOS and not iOS?

blm

6년 전discuss

I get an error about the browser not supporting cookies. In the browser console I get this:

  A cookie associated with a cross-site resource at http://64.225.122.27/ was set without the `SameSite` 
  attribute. It has been blocked, as Chrome now only delivers cookies with cross-site requests if they are 
  set with `SameSite=None` and `Secure`. You can review cookies in developer tools under 
  Application>Storage>Cookies and see more details at https://www.chromestatus.com/feature/5088147346030592 
  and https://www.chromestatus.com/feature/5633521622188032.

Chrome Version 80.0.3987.163 (Official Build) (64-bit) on a Apple MacOS

blm

6년 전discuss

I dont think you understand what it is like in some job markets. Once you are in an industry you might be able to sustain a career without certifications but how is someone supposed to break into an area when people only hire candidates with "experience" or certifications? Certifications were proof that you got off your ass and learnt and passed an exam. People that hire do not trust resumes anymore because candidates can put anything in a resume to make them sound good. You could construct a lab at home and write about your learning activities but in my experience no one trust such "evidence" since people can just copy and paste other peoples work.

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