physics, do we exist or not?

danielwang · Post by **danielwang** » Wed Sep 17, 2003 3:14 pm

It was a demonstration of the realitivity of difference when restricted to certain condition. For example, in the original case, he has shown that 1 = 2 whenever a = b, while mine simplified it down.

Ask someone at Clay to explain it to you. Damn...
Keith Devlin should have put this interesting thprinciple into one of his books.

paizuri · Post by **paizuri** » Wed Sep 17, 2003 3:27 pm

Arigatomyna wrote:
danielwang wrote:Let's simplify this relativity down:

It is given that 2x + 5 = 3y

There's a flaw right there:
if 2x+5=3y,
then 3y=2x+5,
y=(2x+5)/3,
and therefore 2x+5 = 3y = 3 (2x+5)
Got the point?
I don't. I don't get the point. Are you trying to show another way to have a faulty equation?

You say y=(2x+5)/3
In that case, 2x+5=3y [fine]
but 2x+5=3(y) --> three times y
so 2x+5=3[(2x+5)/3] in which case the 3s cancel out and you verify it with
2x+5=2x+5
But you leave a 3 out...
2x+5=3y=3(2x+5)
...why do that?

If you're just trying to show another way to get an equation to work out incorrectly by leaving things out, that's fine. But what's the point in that? We already know the first one given was faulty because of the 0, and now this one is faulty because you left a 3 out.

I don't see the point of your example.

The point is that danielwang doesn't know how to do simple algebra.

Arigatomina · Post by **Arigatomina** » Thu Sep 18, 2003 1:57 pm

Yes, I'd agree with Paizuri here.

in the original case, he has shown that 1 = 2 whenever a = b, while mine simplified it down.

The problem is that he *didn't* show this. His equation was flawed, so it only 'pretended' to show it. In reality, all he showed was that if you forget the 0 you can act like it works. And you may have 'simplified' things, but you didn't show anything either - except that by forgetting a number you can get false equations.

Man...you're an engineer? I'd love to have had you in my physics class, danielwang, you remind me of a guy I went to school with before I switched majors. ^_^;;;

kthulhu · Post by **kthulhu** » Thu Sep 18, 2003 2:00 pm

"We're all Mexicans, in our funny Mexican cars
We're all old people, in our big old cars
We're all angry Irishmen, drinking dry the bars"

Deep verse. That probably has the answer to this thread...

Mr Pilkington · Post by **Mr Pilkington** » Thu Sep 18, 2003 2:59 pm

kthulhu wrote:"We're all angry Irishmen, drinking dry the bars"

**Dries Tear**

Good times.