qjkxbmwvz

joined 1 year ago
[–] qjkxbmwvz@startrek.website 3 points 22 hours ago

Yep, you're right


I was just responding to parent's comment about fiber being best because nothing is faster than light :)

[–] qjkxbmwvz@startrek.website 6 points 1 day ago (1 children)

Can you explain the Ethernet requirement more? Was that just that the computer didn't have WiFi, or was it set up such that only the wired interface worked with their VPN, or...?

Can you explain your travel router situation? Did you use the travel router to access WiFi and provide an Ethernet port for the computer (I think this is called "WISP mode")? Or was this an 4G/5G router?

In any event, at least on Android you can connect to WiFi and tether to a computer over USB. It's very useful for setting up a computer without WiFi drivers, as Linux will almost always recognize the shared Internet (so, it's functionally a USB wifi dongle with very good driver support).

[–] qjkxbmwvz@startrek.website 13 points 1 day ago* (last edited 1 day ago) (3 children)

That's...not really a cogent argument.

Satellites connect to ground using radio/microwave (or even laser), all of which are electromagnetic radiation and travel at the speed of light (in vacuum).

Light in a fiber travels much more slowly than in vacuum


light in fiber travels at around 67% the speed of light in vacuum (depends on the fiber). In contrast, signals through cat7 twisted pair (Ethernet) can be north of 75%, and coaxial cable can be north of 80% (even higher for air dielectric). Note that these are all carrying electromagnetic waves, they're just a) not in free space and b) generally not optical frequency, so we don't call them light, but they are still governed by the same equations and limitations.

If you want to get signals from point A to point B fastest (lowest latency), you don't use fiber, you probably use microwaves: https://arstechnica.com/information-technology/2016/11/private-microwave-networks-financial-hft/

Finally, the reason fiber is so good is complicated, but has to do with the fact that "physics bandwidth" tends to care about fractional bandwidth ("delta frequency divided by frequency"), whereas "information bandwidth" cares about absolute bandwidth ("delta frequency"), all else being equal (looking at you, SNR). Fiber uses optical frequencies, which can be hundreds of THz


so a tiny fractional bandwidth is a huge absolute bandwidth.

80% of the USA lives within urban areas (source). Urban "fiberization" is absolutely within reach.

Agree that running fiber out to very remote areas is tricky, but even then it's probably not prohibitive for all but the most remote locations.

[–] qjkxbmwvz@startrek.website 2 points 2 days ago

Yes, but you're not alone (my partner tends this way).

[–] qjkxbmwvz@startrek.website 2 points 2 days ago

Don't forget Pinarello! Gorgeous and, last I checked, very well regarded. Just make sure your wallet is prepared


you can definitely drop $15k on a well-spec'd Pinarello Dogma.

[–] qjkxbmwvz@startrek.website 6 points 2 days ago

The CW folks would presumably be sending QTH instead


I wonder if this graph captures that/if it would make an appreciable difference?

[–] qjkxbmwvz@startrek.website 2 points 2 days ago

I just wish they made toddler clothes in my size.

[–] qjkxbmwvz@startrek.website 8 points 3 days ago* (last edited 3 days ago)

So the irony is

I see what you did there...

[–] qjkxbmwvz@startrek.website 9 points 4 days ago (2 children)

Do you still start in 1st? Do you skip gears?

[–] qjkxbmwvz@startrek.website 5 points 4 days ago (1 children)

Left pedal looks more like a dead pedal to me.

And as others have said, change in direction is still acceleration. That's part of Newton's (apocryphal?) apple story


he witnessed an apple falling, and wondered why the moon doesn't also fall. His amazing insight is that it does fall (accelerate), it's just that it falls in such a way that it orbits, rather than hits, the Earth (for timescales relevant to a human).

[–] qjkxbmwvz@startrek.website 22 points 4 days ago (2 children)

"Can you hold it" was meant as "abstain from pooping for just a little longer," but was instead interpreted as, "poop, and then hold the poop in your hands."

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