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Comments:
<0> Personal Problem
<1> okay
<1> now you are just goading me
<0> no
<0> I think your choice of the word lie was inflammatory
<1> So you are saying that I suffer from some kind of emotional disorder because I believe that you cannot take the square root of a negative number.
<1> or I believed rather.
<2> I believe they call it a "complex"
<1> ROFL
<0> cn28h that's spectacular, rotfl
<0> SJr|nx__ no, I was suggesting that you attempted (apparently) to apply it inapropriately and then concluded you'd been deceived
<1> no it has nothing to do with application
<0> yes it does
<0> applied to the real numbers, it's a true statement
<1> No the statement isn't
<0> yes it is
<1> The correct statement is "The square root of a negative number is non-real"
<1> not
<0> in the domains of reals, there is no square root of negative number
<1> "You cannot square root a negative number"
<1> Right but you are changing what is being said
<1> there is a BIG difference between
<2> the domain of reals is ***umed, because you haven't learned about other domains
<1> "In the domain of reals, there is no square root of a negative number" and "There is no square root of a negative number"
<0> I disagree
<2> saying that it lies outside the domain would be meaningless at that point
<1> cn28h no the domain of reals isn't ***umed, because you haven't learned about any domains at that point.
<2> hm?
<1> Right and just because person X doesn't understand the concept of domains
<1> doesn't actually make what you tell them true.
<1> Its a simplification, and a falsity.
<0> oh ****
<1> what?
<0> so you want all non-lies to be eternal verities?
<1> Yes
<0> you're gonna have some interesting conversations with God
<1> lol
<1> Knowledge is justified true belief.
<0> you're gonna be VERY disappointed in EVREYTHING you thought you knew
<1> :P
<0> and physics is just gonna kill you early
<1> lol
<1> Newtonian Mechanics is not true
<0> "it's obvious, heavier objects fall faster than light ones"
<1> its inaccurate in extreme cases
<1> its a good approximation in most cases
<2> "what about air resistence, uh, and the gravitational pull of the sun and moon.. wait, the earth isn't a sphere, so..." ;)
<1> but ultimatetly it is not true
<1> and if you say
<0> nothing is true, by your definition, in physics
<1> Sure it is
<0> and I mean NOTHING
<1> Newtonian Mechanics when prefixed with "This model has been superceeded but is still very useful for most cases"
<1> is perfectly valid in my opinion
<1> just like saying
<1> "The square root of a negative number is not a real number" or "In this case, or for right now the square root of a negative number is meaningless"
<1> those are true statements
<1> "Teacher, What is the square root of negative -1?" "You can't square root a negative number"
<1> that is FALSE
<0> SJr|nx__ I'm suggesting that there are no true statements in physics (using your definition of true)
<0> geezus, get over it
<1> and I could live with that fact.
<1> get over what?
<0> the square root of a negative number
<1> its an example?
<1> I don't care
<0> and example of what? you call it a lie
<0> I don't
<0> you seem upset that someone told you it once
<1> an example of a lie that students are told at one point to make there lives easier.
<1> I'm not upset at all.
<0> NO
<1> ?
<0> and it's not a lie, that you didn't understand the context was the problem
<1> I'm just having a discussion.
<0> for some reason you interpreted it as applying outside the domain in which it was stated
<1> The domain isn't stated or of issue in a Grade 9 cl***.
<3> where are you going with this?
<0> which of us?
<1> lol let me state my entire position again.
<3> SJr
<1> "Teaching requires little white lies from time to time" "A white lie is still a lie"
<1> "The square root of a negative number does not exist" is a false statement by itself and without quantification.
<1> a lie is knowingly disemminating false information.
<2> the domain is implied to be reals, even if you don't know what reals are yet, that's all you've learned at that point.
<1> a false statement is an example of false information.
<1> Wrong
<1> cn28 and I'll tell you why
<1> Because when you introduce the square root function
<1> it opens up two doors
<2> you learned something other than reals by 9th grade?
<1> Irrational and Complex
<2> apparently you didn't learn very well :D
<2> irritonals are reals
<1> I know that
<2> irrationals
<1> What I am saying is that grade 9 student has no concept of number systems
<1> or domains or ranges
<2> so you're saying they taught you complex numbers, but then told you you couldn't take the sqrt of a negative number? this sounds hard to believe
<1> lol I'm not in grade 9 now
<1> No what I am saying is that they introduced the square root function
<1> so the sqrt(4) = 2
<4> uhm, a grade 9 student should have a concept of number systems, domains and ranges.
<1> and so on and so forth.
<1> okay grade 8 student then
<4> Not necessarily of imaginary numbers, though.
<1> I'm sure that you learn about the square root function
<1> before domain and ranges
<1> unless I'm mistaken actually domain and ranges are properties of functions
<1> and that wasn't until grade 10
<1> I don't have a grade 9 math text book here
<1> But in any case
<3> this all depends on the student, the school and the country they are in
<1> suppose there is a student who has no concept of number systems and domain and ranges. Said student is being introduced to square rooting. The teacher says for example the square root of 4 is 2. If the student asks what is the square root of 2. The teacher does not say "It does not exist" they would then say it is a number that cannot be represented as a fraction. If the student were to ask "What is the square root of a negative number" The t
<1> "You cannot square root a negative"
<1> NOT
<3> how do you know what they would say?
<1> "A number that is not real."
<1> I said suppose
<1> I think the above example is certainly possible
<1> and if the above example ever occured
<1> then said teacher will have lied to the student.
<3> **** it, i really dont care to be honest
<3> if the student wants to pursue the issue and find out the reason then great, good for them. If they dont, well they'll probably never need to know the exact truth of the matter anyway and the universe will go on, the laws of physics wont break down and the universe wont implode on itself
<1> that was never at issue
<1> alls that was at issue was weather the teacher was knowingly disseminating false information, or in other words lying.
<0> it must be becasue all this is suppose, and you leap from there to "you MUST lie in order to teach"
<1> whether*
<1> lol
<1> Okay fine
<1> I will conceed that it is not a physical law of the universe, or of phsycology, or of educational theory, that you must lie to teacher. I will however contend that teachers do lie in order to simplify and teach on a regular basis.
<3> agreed
<0> no
<0> elide lie and I'll accept it
<1> ta ta
<2> you conceed that you were right? that's the same thing you originally said haha
<2> well
<1> lol
<2> almost
<1> Yes you are right
<1> :p
<3> so now we're debating the meaning of the word "lie" :P
<3> screw this
<1> Yes
<1> screw this
<1> I have my knowledge and reason philosophy text book out
<1> and I need to do my c++ ***ignment
<0> I thought you finished that an hour ago
<1> lol no
<0> you should have
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