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atallcostsky's comments

atallcostsky | 10 years ago | on: Cell-Site Simulators Aren’t Secret Anymore

I wonder if it would be possible to take the idea of certificate authorities and apply it to cell phone towers. Basically, each cell tower company would be a CA, and could generate a certificate for each cell tower. Major cell tower companies could then be trusted by other CAs, and cell phones could have a store of trusted CAs. Then, when a cell phone attempts to connect to a tower, a check is made to verify that the tower is trusted by a trusted CA. This way, a user could (at least maybe) revoke a certificate from a CA that has trusted a group that has set up a cell site simulator.

My knowledge of PKI is pretty shaky. Does anyone know if something like this would work and/or be an improvement?

atallcostsky | 10 years ago | on: Ask HN: Is there microscope equivalent for sounds?

Related to this topic, there are some ways of visualizing sound. Some options are:

* Spectrograms: https://en.wikipedia.org/wiki/Spectrogram

* Vectorscopes: https://en.wikipedia.org/wiki/Vectorscope

Digital audio workstations [DAWs] (used often by producers of electronic music) have lots of tools for visualizing audio in this way.

Here's an example of how some of the above work in FL Studio, a popular DAW: https://www.youtube.com/watch?v=jfnWlLS6Bqg

atallcostsky | 11 years ago | on: Make School a Democracy

"Given learning by 'doing' is known to be worse I wonder if they have hit some sort of local maxima."

I'm curious - would you be able to expand on this? I find that I prefer learning by doing projects, building, etc as opposed to reading/problem sets/etc. Has there been research to compare the two approaches?

atallcostsky | 11 years ago | on: Scientists say they’ll soon extend life ‘well beyond 120’

This would be a problem of course, but I'm betting this is a problem most people would like to have. If my two options are: Die at 100, and not have to work for the last X years, or live an extra 20 years, with required working, I at least would prefer to live and work than to die and not work.
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