Math Fun

Carleas,[tab]

I told you that my examples were a reflection of your example, each merely making a convenient assumption that allows the puzzle to seem like it is solvable, even though in the final analysis, it actually isn’t.

Carl, you are just doing as I said that you were going to do back at the beginning of this; repeat yourself over and over while ignoring my counter arguments (although you did manage to muster up the answer to one usually ignored question). You seem to be incapable of seeing the obvious but perhaps are merely wrapped up into an ego concern of one type or another. In either case, you appear to not really care of the truth of this matter and thus I no longer care to discuss it with you. Your “Blue-eyes” class of puzzles are not being validly addressed.

But Wiki is in error in many articles, so this one wouldn’t be anything exceptional.[/tab]

[tab]

And I distinguished my proposed solution from your examples: my proposed solution relies on deductive logic of the form “if X → impossible, ~impossible |- ~X”. Your examples do no such thing, they are (and you’ve acknowledge they are) scientifically inductive, and thus not based on deductive logic.

Your attempts at psychoanalysis aside, I’ve responded to every argument you’ve made clearly and directly. Indeed, when your arguments were good, I’ve acknowledged as much and revised my arguments to address your valid points; you have ever reason to believe that a valid criticism clearly expressed will be seriously considered and result in a revision of my position, as it has on multiple occasions).

And while of course Wikipedia can be wrong about common knowledge, the syllogism I’ve offered (which you haven’t bothered to address directly, i.e. by pointing to a specific line that you have a problem with) is not original to Wikipedia. When you doubt wiki’s accuracy, follow the sources: look at the Stanford Encyclopedia of Philosophy and its entry on the problem. A Nobel Prize winner built his most famous work on it, read his paper.

There are two possibilities: You have actually identified a defeater of the logic at play, and refuse to reveal it clearly even though it would clearly be a significant achievement; or you have not, and you care not to discuss it because you care not to admit it.

If you would admit it, we could focus on the SR, where I think you have a real possibility of being right (although I still think you’re wrong about that too).[/tab]

:wink:

Repeating yourself and ignoring me by copying and pasting an allegation that I’m repeating myself and ignoring you? Very meta.

Time to end the discussion, I think.

The Italian Book.

Last week I bought a book in Italy. The cashier got hundred Euros and gave me twice as much and five cents more back than my entitlement was. Obviously the cashier had confused the amount in euros with the amount in cents.

How expensive was the book?

n/m – later.

As I said: the amount in cents (euro cents - of course).

The Italian Book

[tab]94.80?[/tab]

That is false.

gah

I have to convert it to dollars in order to make cents of it… :-"
[tab]Actually, I must be misunderstanding you in some way.

You seem to be saying that you received twice the proper change, x, plus an extra 5 cents. That would be:
received = 2x + .05

But then you say that the cashier confused euros with cents. That would mean that what was received was 100 times what was proper:
2x + .o5 = 100x

And that yields some fraction of a cent as the proper change. So I don’t get what you meant to say.[/tab]

The cashier got hundred euros (for you: dollars :slight_smile: ) and gave me twice as much (back as my entitlement was) and five cents more back than my entitlement was. Obviously the cashier had confused the amount in euros (for you: dollars :slight_smile: ) with the amount in cents (of the change).

Is that supposed to be any different than I described?

Do you mean what you linguistically described, or what you lingusitically and mathematically described or what you mathematically described?

Shall I tell more?

Nah… I’ll just accept that I don’t get what you are saying.

I estimate that the probability that your problem with my task is no pure text comprehension problem is about 90%.

A linguistical hint:
tabAccording to the text the cashier did not confuse one thing with itself.[/tab]
A linguistical-mathematical hint:
tabIf the cashier confuses two things, then they have to be considered as two “things” in a mathematical sense too.[/tab]
A mathematical hint:
tabThere is merely one unknown in your equations.[/tab]
:blush: or :astonished: or :open_mouth: or all ?

entitlement means my change?

I think I got it. Pardon if your hits or james answers already say this is false. I haven’t opened any tabs.

[tab]If book dude cofused the cent amount with the euro amount, that means that the amount of euros he was supposed to get back was 5.
If he was supposed to get 5 and got twice as much, then he got 10euros.

He was supposed to get 5 euros, 10cents, but got 10euros, 5 cents.

Therefore the book cost 94 euros, 90 cents.

Also, no idea why I said 94.80 before. Bot enough coffee i think[/tab]

wait that’s wrong. Not twice as much plus .5
Hold on. He gave me back twice as much total, or twice as many euros?