dasudasu

21 ms·

181.
by dasudasu 6y ago
If you're going to lay a fiber across the oceans, then yeah, that capacity is going to approach the Shannon limit, but at some point there is a calculation to be made about how expensive it is to use all that capacity vs using multi-co
182.
by dasudasu 6y ago
This would never be for a home access point. This would be used for long-haul communications (i.e. between metro areas). The data rates there are already pretty ludicrous. The current standard is called 800G, for 800 Gbit/s per wavelen
183.
by dasudasu 6y ago
Electro-optic conversion is expensive in terms of power, so you better be sure it's necessary. There are still some people looking at hybrid computers with both optics and electronics. To be practical, you'd need both to be realiz
184.
by dasudasu 6y ago
It is not particularly hard to do a "hero" experiment like this. Shannon limits to fiber transmission have pretty much been reached experimentally a long time ago. Muxing several wavelengths together is also of course the backbone
185.
by dasudasu 6y ago
This is how all exams at the university level used to be conducted. Not really practical however when you have large class sizes.
186.
by dasudasu 6y ago
Poker is still a game of chance with beginner's luck being a thing. It's a quote from Buffett, relayed from poker folklore: As they say in poker, “If you’ve been in the game 30 minutes and you don’t know who the patsy is, you’re t
187.
by dasudasu 6y ago
This is seen even in very technical fields, such as physics. As the saying goes in poker, if you are in academia and can't spot this person, then it's probably you. It's also a slightly cynical take on imposter's syndrom
188.
by dasudasu 6y ago
Discounting is also a harsh mistress. If your model expected a 10% discount rate but actually achieves -20%, say next year, then it would need to produce 51% just to get back to baseline on the year after that. Early missed returns do hurt
189.
by dasudasu 6y ago
I don't think it's unreasonable to not want to be holding cash (if one doesn't need it) in the face of so many monetary injections. 2008 showed us that all this stimulus money eventually ends up in assets, aka trickle-down ec
190.
by dasudasu 6y ago
If you can stand his idiosyncrasies, Lubos Motls offers many direct counter points to Sabine: https://motls.blogspot.com/2019/03/some-reasons-why-west-won... https://motls.blogspot.com/2018/11
191.
by dasudasu 6y ago
Finance, when done right, is just the art of efficient capital allocation. Producing the right thing is also important.
192.
by dasudasu 7y ago
Error correcting codes are certainly a part of it (from simply looking up the definition of FT8), but what can also help generally is knowing very specifically the frequency range of your signal so that you can filter out the out-of-band no