Search found 331 matches

by arbiteroftruth
Wed Apr 12, 2017 5:15 pm UTC
Forum: Serious Business
Topic: Breaking Up the United States
Replies: 174
Views: 16452

Re: Breaking Up the United States

If somehow "separate but equal" actually was true, then certainly at the very least a constitutional argument could be made for it. Would still be a bad idea for a whole slew of other reasons of course. The quote isn't "If separate but equal was true then the original reason it was d...
by arbiteroftruth
Tue Mar 07, 2017 6:11 pm UTC
Forum: Hardware
Topic: Battery Tester Project
Replies: 34
Views: 10852

Re: Battery Tester Project

If you're comfortable with circuit theory for electronics, there's a good metaphor to use for thermal stuff. Power dissipation in watts translates to an ideal current source in amps, thermal resistances translate into literal resistors, ground is ambient, and voltages in volts translate to temperatu...
by arbiteroftruth
Tue Mar 07, 2017 5:17 pm UTC
Forum: Hardware
Topic: Battery Tester Project
Replies: 34
Views: 10852

Re: Battery Tester Project

This 20W resistor is derated by 50% by ~90-degrees Celsius. Granted, that's pretty hot, but I still need to ensure that the resistor doesn't go above 115-degrees (0r +90 degrees over ambient). Why? The rated max temperature of the resistor is 155C. The derating by ~50% at 90C is referring to a 90C ...
by arbiteroftruth
Tue Feb 28, 2017 6:08 pm UTC
Forum: Hardware
Topic: Battery Tester Project
Replies: 34
Views: 10852

Re: Battery Tester Project

You're just missing one key fact: the MOSFET has ~1000pF of capacitance on the Gate/Source. The OpAmp is only designed to be unity-gain stable at 100pF of capacitive loads. Yeah, but the gate capacitance isn't in the right spot to be considered a load, as far as that spec is concerned. And the fact...
by arbiteroftruth
Tue Feb 28, 2017 5:36 pm UTC
Forum: Hardware
Topic: Battery Tester Project
Replies: 34
Views: 10852

Re: Battery Tester Project

In your configuration the transistor should be pretty benign for stability. The transistor will behave as essentially a unity-gain voltage buffer, with an offset due to the gate-to-source threshold voltage. The transconductance gain is gain from gate-to-source voltage to drain-to-source current. But...
by arbiteroftruth
Fri Feb 24, 2017 6:34 pm UTC
Forum: Hardware
Topic: Battery Tester Project
Replies: 34
Views: 10852

Re: Battery Tester Project

Ah, upon a little checking, it's a larger package size that helps (which usually corresponds to a higher voltage rating at a given value, hence my mistake). So if you use a 1206 capacitor rather than an 0805, you should get better performance.
by arbiteroftruth
Fri Feb 24, 2017 6:23 pm UTC
Forum: Hardware
Topic: Battery Tester Project
Replies: 34
Views: 10852

Re: Battery Tester Project

That's why you go with a much higher voltage rating than you really need. A 25V X7R should be pretty good at 0 - 5 V.
by arbiteroftruth
Fri Feb 24, 2017 5:58 pm UTC
Forum: Hardware
Topic: Battery Tester Project
Replies: 34
Views: 10852

Re: Battery Tester Project

BTW: I'm not even sure if accurate 2.2uF capacitors exist in 0805 form factor. All that I've found so far are some X7S inaccurate +/-20% crap. Which is important for the low-pass anti-aliasing filters I've put into the front of the ATMega pins. NP0 (maximum accuracy and temperature stability) only ...
by arbiteroftruth
Thu Feb 02, 2017 10:43 pm UTC
Forum: Mathematics
Topic: Genetics in a species with three sex chromosomes
Replies: 18
Views: 2571

Re: Genetics in a species with three sex chromosomes

Things get interesting if you assume the genes are selfish in their sexual preferences. So that for example, an XY male would typically prefer an XX female over a ZZ V-male, because the XY male's X chromosome would contribute an instinct to propagate the X chromosome rather than the Z. Conversely, a...
by arbiteroftruth
Fri Jan 20, 2017 10:54 pm UTC
Forum: Mathematics
Topic: Misunderstanding basic math concepts, help please?
Replies: 338
Views: 50432

Re: Misunderstanding basic math concepts, help please?

Since you are all reluctant to admit that you can't see a way out of the mapping problem... I'm going to assume that you all have enough experience and sense to have some comprehension of the mapping problem I outlined. And further - that if you had a trivial solution to the problem you would be ru...
by arbiteroftruth
Mon Jan 16, 2017 7:05 pm UTC
Forum: Mathematics
Topic: N-player combinatorial game theory
Replies: 2
Views: 1396

Re: N-player combinatorial game theory

Thanks, notzeb! That was a very interesting read. Although the author still assumes perfect play on the part of all players, he also makes the useful observation that a player will typically prefer a situation in which victory is still *possible*, even if not forceable, over a situation in which vic...
by arbiteroftruth
Thu Jan 12, 2017 10:11 pm UTC
Forum: Mathematics
Topic: N-player combinatorial game theory
Replies: 2
Views: 1396

N-player combinatorial game theory

Does anyone know where I could get information on game theory applied to deterministic, perfect knowledge games with more than 2 players? Think 3-player chess, for example. In particular, I'm curious how one would define an optimal strategy. On the one hand, there will often be a Nash equilibrium in...
by arbiteroftruth
Mon Dec 05, 2016 5:19 pm UTC
Forum: Mathematics
Topic: Misunderstanding basic math concepts, help please?
Replies: 338
Views: 50432

Re: Misunderstanding basic math concepts, help please?

Axiomatic mathematics is fundamentally structured around the concept of absolutes. The First Law of Thought is a statement of the assumption of absolutes: (x = x). This straight up says that x is assumed to have an absolute value. That the value of x does not depend on its relationship with other t...
by arbiteroftruth
Wed Nov 09, 2016 9:53 pm UTC
Forum: News & Articles
Topic: 2016 US Presidential Election
Replies: 8482
Views: 705141

Re: 2016 US Presidential Election

I understand Zohar is saying that racism is a continuum, and the less you value fighting racism as a priority, the more racist you are. That's not a very helpful use of the word though. Because it forces you to either claim that protecting minorities must always be the absolute top priority in all ...
by arbiteroftruth
Mon Nov 07, 2016 10:24 pm UTC
Forum: News & Articles
Topic: 2016 US Presidential Election
Replies: 8482
Views: 705141

Re: 2016 US Presidential Election

I don't think you know what pragmatic is. Following your belief without considering facts or evidence, or even weighing consequences is not pragmatic - that's exactly what an ideologue does. They would say they have considered the evidence and the consequences No, they *deny* the evidence and the c...
by arbiteroftruth
Mon Nov 07, 2016 10:05 pm UTC
Forum: News & Articles
Topic: 2016 US Presidential Election
Replies: 8482
Views: 705141

Re: 2016 US Presidential Election

I don't think you know what pragmatic is. Following your belief without considering facts or evidence, or even weighing consequences is not pragmatic - that's exactly what an ideologue does. They would say they have considered the evidence and the consequences, and have come to difference conclusio...
by arbiteroftruth
Mon Nov 07, 2016 8:55 pm UTC
Forum: News & Articles
Topic: 2016 US Presidential Election
Replies: 8482
Views: 705141

Re: 2016 US Presidential Election

If you think pragmatism has anything to do with anything, look at how ridiculous their budgets are - they can't even get right-wing economic organizations to say they won't increase the deficit, but the politicians push for more tax cuts anyway. Why? Because the tax cuts themselves are the goal. Ar...
by arbiteroftruth
Mon Nov 07, 2016 6:51 pm UTC
Forum: News & Articles
Topic: 2016 US Presidential Election
Replies: 8482
Views: 705141

Re: 2016 US Presidential Election

Sorry for the confusion, I was responding in the context of why the Republican party seems to be made up of ideologues rather than pragmatists Mostly because you disagree with them. I guarantee you that plenty of conservatives would make a similar observation about Democrats. Not at all, I was rais...
by arbiteroftruth
Mon Nov 07, 2016 5:38 pm UTC
Forum: News & Articles
Topic: 2016 US Presidential Election
Replies: 8482
Views: 705141

Re: 2016 US Presidential Election

Thesh wrote:Sorry for the confusion, I was responding in the context of why the Republican party seems to be made up of ideologues rather than pragmatists


Mostly because you disagree with them. I guarantee you that plenty of conservatives would make a similar observation about Democrats.
by arbiteroftruth
Mon Oct 31, 2016 4:36 pm UTC
Forum: Serious Business
Topic: Sortition (split from 2016 US Presidential Election)
Replies: 70
Views: 11396

Re: Sortition (split from 2016 US Presidential Election)

How about a hybrid system where you have traditional elections, but the candidates available on the ballot are randomly selected? You'd have to offer significant compensation just for being a candidate, since these people are going to undergo public scrutiny, but it seems to me you get the best of b...
by arbiteroftruth
Wed Oct 26, 2016 8:53 pm UTC
Forum: Mathematics
Topic: Three externally tangent circles sharing a single point of tangency
Replies: 19
Views: 4023

Re: Three externally tangent circles sharing a single point of tangency

Unless you define it in such a way that the circle centered at infinity has no interior.
by arbiteroftruth
Tue Oct 25, 2016 10:22 pm UTC
Forum: Mathematics
Topic: Three externally tangent circles sharing a single point of tangency
Replies: 19
Views: 4023

Re: Three externally tangent circles sharing a single point of tangency

Some attempts at proof might be tricky, because this conjecture is false in the degenerate case of a circle with radius 0. That is, you have two externally tangent circles, and a third 'circle' of radius 0 centered on the point of tangency. So the point of tangency is the entirety of the third circl...
by arbiteroftruth
Mon Oct 17, 2016 12:51 am UTC
Forum: News & Articles
Topic: 2016 US Presidential Election
Replies: 8482
Views: 705141

Re: 2016 US Presidential Election

This is where we disagree on the analogy. You're saying it's hitting the truck vs. hitting the ditch. I'm saying it's hitting the truck at a full 180 degree head-on collision vs. hitting the truck with a 175 degree collision. Sure, you can run the numbers and find that the 175 degree collision is ma...
by arbiteroftruth
Sun Oct 16, 2016 11:29 pm UTC
Forum: News & Articles
Topic: 2016 US Presidential Election
Replies: 8482
Views: 705141

Re: 2016 US Presidential Election

Going with the steering analogy, it's more like having a broken steering wheel and trying to balance the short term goal of steering however well you can(voting for someone from a major party) with the long term goal of repairing the wheel(putting pressure on the major parties to nominate better ca...
by arbiteroftruth
Sun Oct 16, 2016 9:12 pm UTC
Forum: News & Articles
Topic: 2016 US Presidential Election
Replies: 8482
Views: 705141

Re: 2016 US Presidential Election

...do the major parties need my vote or not? Voting is not about filling the needs of the major parties. It's about affecting the outcome of the race. Theoretically, even I could become president of the United States this year. But no matter how strongly you feel that I'd be a better leader than Hi...
by arbiteroftruth
Sun Oct 16, 2016 5:18 pm UTC
Forum: News & Articles
Topic: 2016 US Presidential Election
Replies: 8482
Views: 705141

Re: 2016 US Presidential Election

I haven't decided. But I am neither going to express support for Trump who is unfit for office, nor am I going to contribute to Clinton's mandate to actively work against me on everything I care bout. My vote will indicate failure on the part of the Republicans to earn my vote, not success on the pa...
by arbiteroftruth
Sun Oct 16, 2016 4:58 pm UTC
Forum: News & Articles
Topic: 2016 US Presidential Election
Replies: 8482
Views: 705141

Re: 2016 US Presidential Election

First, note that what I'm arguing for only applies to the Presidential election, because of the unique rules of the Electoral college. And yes, the Presidential election truly is both ways. How, exactly? In the presidential election, do the major parties need my vote or not? If they need my vote, t...
by arbiteroftruth
Sun Oct 16, 2016 3:17 pm UTC
Forum: News & Articles
Topic: 2016 US Presidential Election
Replies: 8482
Views: 705141

Re: 2016 US Presidential Election

Success looks like having spoilers on a regular basis until it becomes obvious that you have to actually earn those spoiler votes in order to win. Even better if it's clear that supporting electoral reform is the best way to earn those votes. The USA has had regular occurrences of "spoiler vot...
by arbiteroftruth
Sun Oct 16, 2016 6:25 am UTC
Forum: News & Articles
Topic: 2016 US Presidential Election
Replies: 8482
Views: 705141

Re: 2016 US Presidential Election

Success looks like having spoilers on a regular basis until it becomes obvious that you have to actually earn those spoiler votes in order to win. Even better if it's clear that supporting electoral reform is the best way to earn those votes.
by arbiteroftruth
Fri Oct 14, 2016 11:00 pm UTC
Forum: News & Articles
Topic: 2016 US Presidential Election
Replies: 8482
Views: 705141

Re: 2016 US Presidential Election

And since you ignored this point, let me ask once again: why do you think playing this long-term spoiler game has a more realistic chance of bringing about a better society than the idea of campaigning for electoral reform, campaign finance reform and lower-level third party candidates while pragma...
by arbiteroftruth
Fri Oct 14, 2016 5:27 pm UTC
Forum: News & Articles
Topic: 2016 US Presidential Election
Replies: 8482
Views: 705141

Re: 2016 US Presidential Election

The arguments against voting third party seem to want to have it both ways regarding the importance of a vote. If you don't vote for a major party, you're hurting the outcome of the election. And the long term effect of a protest vote doesn't matter, because nobody cares about that small portion of ...
by arbiteroftruth
Tue Oct 04, 2016 10:10 pm UTC
Forum: Mathematics
Topic: Factorization using modular arithmetic
Replies: 41
Views: 7319

Re: Factorization using modular arithmetic

Goahead52, you started by assuming the modulus was prime. LucasBrown was talking about the difficulty of solving the problem with large composite moduli. In my second post I have just copy-paste from my documents a method assuming that c is prime. That`s it. But my method remain available even if c...
by arbiteroftruth
Tue Oct 04, 2016 3:09 pm UTC
Forum: Mathematics
Topic: Factorization using modular arithmetic
Replies: 41
Views: 7319

Re: Factorization using modular arithmetic

Goahead52, you started by assuming the modulus was prime. LucasBrown was talking about the difficulty of solving the problem with large composite moduli.
by arbiteroftruth
Wed Aug 24, 2016 11:14 pm UTC
Forum: Mathematics
Topic: Misunderstanding basic math concepts, help please?
Replies: 338
Views: 50432

Re: Misunderstanding basic math concepts, help please?

Treatid wrote:So which is it? A) Axiomatic mathematics relies on natural language to get started OR B) axiomatic systems are entirely distinct from natural language?


A. No question. The answer is A. We've said this many, many times.
by arbiteroftruth
Mon Aug 15, 2016 9:30 pm UTC
Forum: Mathematics
Topic: Misunderstanding basic math concepts, help please?
Replies: 338
Views: 50432

Re: Misunderstanding basic math concepts, help please?

I understand the possibility that something can be absolute truth but that we can't be certain of it. Basically something can be true but humans just can't know with certainty that it's true. However, there's yet a further step needed to answer my original question. Let's say things can be absolute...
by arbiteroftruth
Mon Aug 15, 2016 9:07 pm UTC
Forum: Mathematics
Topic: Misunderstanding basic math concepts, help please?
Replies: 338
Views: 50432

Re: Misunderstanding basic math concepts, help please?

Disagree. You're asking a philosophical question that hinges on the distinction, if there is any, between truth and knowledge. For all the reasons we've explored here, human confidence in mathematical truth can never be absolute. At some point you get back to What the Tortoise Said to Achilles and y...
by arbiteroftruth
Thu Jul 28, 2016 7:03 pm UTC
Forum: Mathematics
Topic: Goahead52's Math Posts
Replies: 148
Views: 12060

Re: Theorem and consequences

Proof by contradiction: Assume x k <y k+1 <(y+1) k+1 <(x+1) k When all numbers involved are positive, taking the (k+1)th root preserves the inequalities: x k/(k+1) <y<y+1<(x+1) k/(k+1) This implies: (x+1) k/(k+1) -x k/(k+1) >1 Since x is restricted to positive integer...
by arbiteroftruth
Thu Jul 28, 2016 4:13 pm UTC
Forum: Mathematics
Topic: Misunderstanding basic math concepts, help please?
Replies: 338
Views: 50432

Re: Misunderstanding basic math concepts, help please?

{definition of 'know' here is problematic. While I don't think we can have absolute knowledge in a sense that I think axiomatic mathematics implies ; I do think that we can create a complete description of the universe without needing to make any assumptions. At the same time, axiomatic mathematics...
by arbiteroftruth
Wed Jul 27, 2016 7:06 am UTC
Forum: Mathematics
Topic: Misunderstanding basic math concepts, help please?
Replies: 338
Views: 50432

Re: Misunderstanding basic math concepts, help please?

Some of the responses come very close to saying that my axioms (definitions) are wrong. I'm hoping I'm mis-reading. Specifically, many of the counter-arguments seem to be based on things other than my stated axioms/definitions. There is nothing a-priori 'wrong' with defining things as you have. But...
by arbiteroftruth
Tue Jul 26, 2016 4:51 pm UTC
Forum: Mathematics
Topic: Misunderstanding basic math concepts, help please?
Replies: 338
Views: 50432

Re: Misunderstanding basic math concepts, help please?

A Socratic Argument The following is a quick summary of essential elements of this thread in terms of the above definitions (with only a smidgen of my bias showing) A: A given system (language, theorem, set of well formed formulae, set of axioms) consists of a set of symbols and a set of rules that...

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