DanDanikov said:
Maze1125 said:
And?
None of that changes the fact that if someone uses a non-standard definition without clarification, then that person is being either purposely obtuse or ignorant.
Standard for who? Did you read my post? It's standard for mathematicians and physicists, not for Joe public who just has to tot up bills and apply taxes. Yes, it makes them ignorant to the wider world of maths, probably in the same way you're probably ignorant to how the scoring system works for Bridge.You don't need to know and being ignorant about that is in no way a bad thing, just in the same way their ignorance is not a bad thing.
Ignorance itself isn't bad, ignorance about something you're trying to do
is bad.
Everyone's ignorant about most things. As you guessed, I am mostly ignorant about the rules of Bridge, but if I were to try and play a game of Bridge, I wouldn't assume I did know the rules. I would make sure to look them up first, and if someone gave a quiz question on the rules of Bridge, I wouldn't try and answer it with any kind of certainty.
I have no problem with people being ignorant of Maths, I have a problem with people being ignorant about anything while being arrogant enough to assume they're not.
I take a fair amount of offence to the superior-than-thou attitude, but that is beside the point...
I'm sorry, what? What holier than thou attitude? I have simply been stating facts.
Anyone who uses a non-standard method without clarification is either obtuse or ignorant, with some level of unjustified arrogance on top. That is a fact. (possibly with a few minor exceptions, but that's beside the point)
Further, I think those are bad things, and I believe most other people do too. That is another fact.
I have a tendency to speak more formally around these things than most people, but that is not a holier than thou attitude, just how I present my arguments.
The mistake at hand is a very minor one. If I were in an actual situation, I wouldn't care at all.
But to claim it is not a mistake at all, is simply false. It
is a mistake and it
is born out of ignorance.
Now, while were on the subject of holier than thou attitudes, lets move on to the rest of your post...
Let's switch places for a brief second, and I'll tell you exactly where you can attempt to attack my position. Firstly, you could argue that the problem is non-ambiguous. Secondly, you could argue that while the problem is ambiguous, the various interpretations presented are qualitatively inferior and therefore should be considered disregarded. Thirdly, you could argue that, while there are many equal interpretations, why one should be considered solely over the others.
I'm sorry, what?
You're telling me how I'm allowed to argue? How unbelievably arrogant. The whole point is that I believe I know something you haven't thought of, and you think the same. That how argument and discussion occur.
But to not only think that, but to also claim you've thought of every conceivable possible retort I could use and you've worked out the only ones I'm allowed to use, and to do that right after accusing me of having a holier than thou attitude?
Wow... just wow...
The core of your argument seems to be that there is only one interpretation of mathematics,
No it isn't.
and in this you are somewhat correct. Subtraction, multiplication, division, they are all fixed.
No they're not. There's multiple different definitions for all of those. None of them are fixed, there are just standards.
The problem isn't in the maths, it's in the communication of it. Brackets do not exist in maths, nor do they need to. There are alternate, valid notations, such as (reverse) polish notation, in which brackets are not needed to eliminate ambiguity. Also, because the underlaying maths won't change, you can happily translate between valid notations.
And?
The problem doesn't make any effort to clarify which notation is in use, so we can safely say the problem is somewhat ambiguous.
No, when a problem doesn't clarify, then the standard is assumed. If someone told you "I was just drinking tea from my cup." you wouldn't think there was a reasonable possibility that they were drinking tea out of a groin protector, because that wouldn't be the standard and the person didn't clarify.
A full answer should state its assumptions, even if it's to what's considered standard, to prevent the ambiguity perpetuating into the answer, however the poll doesn't give that option, nor is there any way to give two or more answers (a variation on the false dilemma fallacy).
Yes, full answers should always state their assumptions, just like in real life everyone should clarify any statement that might be even slightly ambiguous.
But, as you also explain, that can't always be done, or can be done but simply isn't. For various reasons. And, in those cases, such as this poll, the standard is assumed.
That said, many people outright posted their answers as 0, where they very well could give their assumptions, yet still didn't.
The single-execution approach hasn't been demonstrated to be qualitatively worse or incorrect, nor has there been anything other than a fallible appeal to popularity. What does seem to exist is a difference in interpretation (ironic). Mathematically, there is only one solution to a non-ambiguous statement. The problem we have here is resolving the statement to a point that is unambiguous and can be solved.
The problem isn't the ambiguity, but your assumption that because ambiguity exists that both options are equal.
They are not.
Ambiguity exists in
everything, nothing can
ever be stated completely unambitiously. Even if you clearly define every single word in your statement, it can be argued that the words in the definitions haven't be defined themselves, leaving the definitions, and therefore the original statement, still ambiguous. And that can be done ad-infinitum.
Ambiguity always exists to some extent. Which is why we pick the standard when there isn't clarification. And when there is clarification, we pick the standard with-in that group. You've done exactly that. You've considered that maybe you could just take the operations in order, but you still assume the standard of going left to right when the operations could just as well be taken right to left in order. Once you reached the idea that going in order could be valid, you still assumed the standard with in that.
At some point you
always have to go with the standard, you just arbitrarily do so at the second level, rather than the first.
Your arguments assume that pedmas is the only way to make that resolution and continue from there.
No it's not. My argument is that it is the most correct way with-in the Mathematics we have constructed as a race.
My arguments are at a more fundamental level- that your assumption is merely an assumption and not considered solely to the exclusion of all others.
So why do you exclude orderings that go in other ways? The left to right ordering is just an assumption, yet you exclude all the others, of which there are many.
The baseline question seems to be whether or not pedmas should be the only interpretation of the question posed and how doing so would make all the other interpretations incorrect.
No it isn't, answers that include both standard and non-standard methods and explain them both are inherently better than ones what just use one method. That doesn't change the fact that, given the question (like every question) has some level of ambiguity, the standard answer is a better one to give than a non-standard one.