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Comment Re:If public transport were free in the US... (Score 1) 654

I agree with this, but you really should've stated the reason. If public transportation was free, then poor people, who previously didn't go anywhere, would start using it. People who used to use it but either currently own or could afford a car would get disgusted by the increased volume and decreased quality of service, and would start using cars. People who previously drove would hear the horror stories about the mess that is public transportation, and thank their lucky stars that the only repercussion is a slightly increased level of traffic. One benefit this would have would be more poor people getting access to transportation to jobs or education.

Comment Re:x/0 does not equal 0. (Score 1) 1067

Hmm, I've got Khan Academy agreeing with me too: on his board at 3:16. But, what does he know, he's only one of the most highly regarded sources for learning mathematics online...I'm sure it was just a slip-up that no one seems to have successfully countered in his comments...

Comment Re:Infinity (Score 2) 1067

it approaches infinity if you start at one and get closer and closer and closer to 0. N/.00000001 is pretty high.

But it approaches negative infinity if you start at -1 and get closer and closer and closer to 0. N/-.00000000001 is pretty low.

because of this discontinuity...the largest discontinuity possible in fact, the actual value of N/0 cannot be any of these compromises. It has to not exist.

Comment Video explaination (Score 1) 1067

This video does a decent job of explaining the problem: Numberphile: The problem with zero" It tries to address the very question that OP is asking.

Division by zero isn't equal to zero. It isn't equal to positive infinity. It isn't equal to negative infinity. the value of any number divided by zero (including 0) is that it does not exist. After all, doesn't any number divided by itself equal to one? So shouldn't 0/0 = 1? No, because you can't divide by zero. The proper way for a computer to respond to an attempt to divide by zero is, "I have absolutely no idea what's going on here. I speak math, and you just asked me to do something that is outside of the language of math. I am going to either crash so I don't do anything stupid, return a reserved value that explicitly indicates that the answer does not exist, or jump out a level, throwing a runtime exception (as appropriate for the given language), and let YOU tell me what to do now. It has to be this way because there is never a single answer that always holds true about what a computer should do when encountering this.

This should be hammered into you first in precalc, and again in any first-semester intro to computer science course, and again in discrete structures, and again in a computer hardware course. This is the reason for a lot of the hostility for asking this question.

Comment Re:x/0 does not equal 0. (Score 4, Insightful) 1067

No, it does not equal infinity.

The Limit as x aproaches 0+ of a/x = infinity.

But the Limit as x approaches 0- of a/x = negative infinity.

because this represents a jump-discontinuity, the value of a/0 is just plain undefined.

This is like week-1 of high school precalc shit. Come on.

"If I do not want others to quote me, I do not speak." -- Phil Wayne