tobinfricke

7 ms·

61.
by tobinfricke 3y ago
This is the issue that is addressed by paying attention to "significant figures." Digits that are significant are shown. Those that aren't, aren't. It's appropriate to round where your precision ends.
62.
by tobinfricke 3y ago
That would be fine if the number were accompanied by a confidence interval.
63.
by tobinfricke 3y ago
That's not the reason sigfigs are important.
64.
by tobinfricke 3y ago
Omg yes. My coworkers often specify parameters (the results of what we would have called "regression" or "fitting" but what is now called "machine learning") to like 14 decimal places when we only know them to
65.
by tobinfricke 3y ago
Probability density functions, presumably. Oh, partial differential equations? For the document files, I love PDF Studio: https://www.qoppa.com/pdfstudio/
66.
by tobinfricke 3y ago
Same in the US. "Airplane single-engine land" and "glider" are two possible private pilot ratings (others include rotorcraft, balloon, multi-engine, seaplane, etc).
67.
by tobinfricke 3y ago
But a pilot's license is generally required to fly gliders. Stuff like winch-launched paragliders excluded.
68.
by tobinfricke 3y ago
Yes, a private pilot's license (PPL glider) is required to fly gliders. OP probably meant that they were considering adding a rating for powered airplanes (PPL ASEL - airplane, single-engine, land). Alternatively perhaps they mean that
69.
by tobinfricke 3y ago
I often wondered why German pharmacies continue to stock homeopathic remedies. Maybe phenylephrine was our equivalent? As someone who suffered chronic congestion, and had experienced the effectiveness of pseudoephederine, it was immediately
70.
by tobinfricke 3y ago
> The failure of IBM is long, slow and tragic. "Failure of IBM"?
71.
by tobinfricke 3y ago
>> Life ultimately became way too popular for Dr. Conway’s liking. Whenever the subject came up, he would bellow, “I hate Life!” But in his final years he learned to love Life again. He narrated a documentary, with the working title “
72.
by tobinfricke 3y ago
Hmm ... Good question.
73.
by tobinfricke 3y ago
Reminds me of GRACE, which consists of two spacecraft in the same orbit, one following the other. By measuring the separation distance between the two spacecraft (which I believe is done through interferometry), the gravity field of the Ear
74.
by tobinfricke 3y ago
"Present company excluded" It's a polite fiction.
75.
by tobinfricke 3y ago
Yup. Same, re: WhatsApp and the $1 annual fee. It made so much sense "lightweight service, charge $1/year, have 1 billion customers." These days I use Signal mainly. But also WhatsApp. And Messenger. And SMS for folks who don
76.
by tobinfricke 3y ago
Also check out https://www.navierboat.com/ , a competitor in this space. And an amazing historical progenitor: https://www.youtube.com/watch?v=E2i3EeUnku0 https://en.wikipedia.org/wiki/U
77.
by tobinfricke 3y ago
These headlines need to be timestamped.
78.
by tobinfricke 3y ago
Reminds me of ... WhatsApp :D (Originally WhatsApp charged $1/year.)
79.
by tobinfricke 3y ago
It's not stored on the server, except perhaps transiently.
80.
by tobinfricke 3y ago
I think you mean iPope
81.
by tobinfricke 3y ago
For year-over-year comparisons, why not just use week numbers? Or even lump week numbers into ranges. First 4 weeks, second 4 weeks, etc. You don't have to invent an entirely new calendar.
82.
by tobinfricke 3y ago
> By 1928, Eastman had already implemented the IFC internally at Kodak and was spending his own money to persuade the rest of the world to follow suit. Soon 140 American companies joined him, maintaining a 13-month calendar for their bus
83.
by tobinfricke 3y ago
I think you are basically reinventing the exterior / wedge product, which is indeed the generalization of the cross product.
84.
by tobinfricke 3y ago
A plane does not have a unique "normal vector" in higher than 3 dimensions.
85.
by tobinfricke 3y ago
> But what did the dot product ever do to you? Fair enough. What I was getting at is that "standard vector analysis" is a choice, and it turns out that there are alternatives where things are defined differently.
86.
by tobinfricke 3y ago
The cross product is a peculiar animal, as it only exists in 3-dimensional space. There is no unique "cross product" in 4 dimensions or higher. (In two dimensions we cheat and define the result of the cross product as the scalar m
87.
by tobinfricke 3y ago
In computing we often like to conflate "ordered tuples of numbers" with "vectors." This vocabulary is even cooked into the C++ standard library. The difference is that mathematical vectors support some additional operati
88.
by tobinfricke 3y ago
It appears to be an elementary introduction to both. It appears that no prior physics knowledge is needed.
89.
by tobinfricke 3y ago
> Scheme lacks the type system, syntax and syntactical "convenience" of curried functions. The argument is that all of that syntax is a distraction.
90.
by tobinfricke 3y ago
The motivation to "implement" physics in code, is that you can't "cheat." You have to spell out every step in a formal way. The motivating example in SICM is that the usual way the Euler-Lagrange equations are writt

More ›