Logic (Earth)

[Papersock]

We all use some kind of logic to figure out what is true and what to believe, right?
How can we tell if one person's conclusions are more logical (and therefore, supposidly, correct) than another person's conclusions?
Reworded: Is one logic more logical than another logic?
What is logic, anyway?
Does it sound like nonsensical gibberish to you now, too?

[Comprehend]

Originally Posted by Papersock

We all use some kind of logic to figure out what is true and what to believe, right?
How can we tell if one person's conclusions are more logical (and therefore, supposidly, correct) than another person's conclusions?
Reworded: Is one logic more logical than another logic?
What is logic, anyway?
Does it sound like nonsensical gibberish to you now, too?

actually, whether something is logical or not has nothing to do with the truthfulness. It only determines whether the conclusion follows from the premises. If it does, it is sound, if not, unsound.

So how do we determine what is logic and what isn't? Formal logic, there is an entire discipline devoted to the study. It is essentially math with words and a great deal of fun.

[Papersock]

Originally Posted by Comprehend

actually, whether something is logical or not has nothing to do with the truthfulness. It only determines whether the conclusion follows from the premises. If it does, it is sound, if not, unsound.

Of course. I could reason that because the earth looks flat it must be flat, but that doesn't make it true.

So how do we determine what is logic and what isn't? Formal logic, there is an entire discipline devoted the study. It is essentially math with words and a great deal of fun.

I should find a book on the subject. I'd probably find it interesting.

[yossarian22]

Originally Posted by Papersock

Of course. I could reason that because the earth looks flat it must be flat, but that doesn't make it true.

But then I could point out how you can see the top of a ship before you can see the body, showing that the Earth is curved. Or just point to a photo from space.

I should find a book on the subject. I'd probably find it interesting.

Always great books. Most of them seem to harp on the various kinds of arguments, though.

[Sunstone]

It can be easy to dismiss logic if you haven't studied it. Bimbo Talk Show Hosts dismiss it all the time.

[kadzbiz]

Logic can vary from person to person depending on one's perception. One could argue that God's presence is not logical, but then others can argue the opposite for example.

Originally Posted by yossarian22

But then I could point out how you can see the top of a ship before you can see the body, showing that the Earth is curved. Or just point to a photo from space.

The ship scenario doesn't prove a curve, only that the ship is rising compared to the horizon. The photo from space of the Earth is 2 dimensional - ie. the Earth still looks flat and circular, pizza-like, to me.

[Comprehend]

Originally Posted by Papersock

Of course. I could reason that because the earth looks flat it must be flat, but that doesn't make it true.

right. In that case your argument would look something like this:

p1. things are as they appear.
p2. the earth appears flat.
C. the earth is flat.

That would be sound logic but also untrue.

[yossarian22]

Originally Posted by kadzbiz

The ship scenario doesn't prove a curve, only that the ship is rising compared to the horizon.

Meaning its curved.

The photo from space of the Earth is 2 dimensional - ie. the Earth still looks flat and circular, pizza-like, to me.

But the entire earth is not visible.from space. Do the sections you are unable to see suddenly disappear?

Besides, there are videos of the earth spinning on its axis.