Spyke

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Huh??

It refers to the ability to locate the source of a sound. It supposes that the localization is achieved only by the difference of the time of arrival of the sound to both ears. That's why the curve is a hyperbola, which is the set of points which distances to the foci (ears) have the same difference, so you couldn't differentiate which of all the points in the hyperbola is the actual source (confusion). But this is too simplistic, the auditory system is much more sophisticated and the source can be localized by other means.

Sound Localization

linux

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Which is better: Linux or GNU/Linux

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It's not unusual to see people talking about android users being Linux users "because android is Linux too" clearly not understanding the difference between Linux the OS, i.e. GNU/Linux, and Linux the kernel. So it's useful when you have to make such a distinction.

privacy

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Is it worth even trying with a samsung?

No, IMO. For a real private android experience you have to switch to Lineage or Graphene and F-droid apps. I'm writing this from a Galaxy A5 2016 with LineageOS with F-droid only apps in one (main) profile and WhatsApp and a couple of other (in my case, sadly unavoidable) proprietary apps in another profile.

Here is a list of supported phones by LineageOS in case you are willing to switch.

privacy

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They are surrounding me... is it time to give up?

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No daily anxiety at all, just being aware of the dangers. When I drive and see a red light I just stop, there is no anxiety involved, I'm just aware of the dangers of crossing. If you are not aware of the dangers of the excessive digital exposure and surveillance you should subscribe to this community and read what's going on in China and in an increasing number of western countries in relation to this.

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understanding

It's about time it's also the title of one of the best introductory books on relativity by David Mermin. Specially for those who aren't good at math but want to understand it beyond popular science books.