Conclusion True histiocytic lymphoma is a rare subset of NHL.
结论真性组织细胞型淋巴瘤罕见。
If that premise is true then that conclusion is false.
如果那个前提是真的，那么结论就是假的。
So if the premises are true then the conclusion must be true.
所以如果前提是真的，那么结论必须是真的。
And if the conclusion is true then the premise is false.
如果结论是真的，那么前提就是假的。
When we look at these two questions we are not asking whether the premises are true we are asking if these were true would the conclusion be true.
当我们看这两个问题的时候，我们没有问这些前提是真是假，如果它们为真，那结论就为真。
They are both invalid there are possible situation where the premise is true and the conclusion false they are not good arguments.
他们都是无效的，有可能的情境，前提为真结论为假，他们都不是好论点。
Sentence statements can be true or false, so premises can be true or false, conclusion can be true or false but arguments can't be.
句子论述可能或真或假，所以前提前提可能或真或假，结论可能或真或假，但是论点不能。
Actually a valid argument doesn't have true premises and true conclusion what is a valid argument?
实际上一个有效论点没有真前提和真结论，什么是有效论点呢？
If an argument is valid and if the premises are true then the conclusion must be true.
如果一个论点有效，如果前提为真，那么结论肯定为真。
But it's not certainly true and if this premise is true then this conclusion is not even probably true is it?
但是如果这个前提为真，这不确定为真，那么这个结论不一定可能为真，对吗？
A situation where both those premises are true and that conclusion is false.
这种情况下，两个前提都为真，但结论是假的。
Yep you're quite right. False premises True conclusion.
是，你们很对，假前提真结论。
Because we know that if the premises are true the conclusion must be true.
因为我们知道如果前提为真，结论肯定为真。
Prof: The conclusion is necessarily true. That's right.
教授：结论必须为真，这是对的。
If the premises are true then the conclusion must be true so the validity of the argument preserves the truth of the premises.
如果前提为真，那么结论肯定为真，论点的有效性，保存了前提的真理。
If this premise is true then this conclusion is probably true.
如果前提为真，这个结论可能为真。
If Technical Statement B is true, then Natural Conclusion C is true.
如果技术声明B是真命题,那么自然结论C也是真命题.
Yes. Yes yes. And true premises false conclusion?
对对对，真前提假结论？
Let me remind you again that an argument is valid if and only if the premises are true the conclusion must be true.
我再来提醒一下，论点有效，如果且仅如果前提为真，结论肯定为真。
And this is the combination of true premises and false conclusion that's ruled out.
这里真前提和假结论的结合，是被排除的。
Is there any possible situation where that premise is true and that conclusion false?
有没有可能的情境，前提为真结论为假？
No sorry there are no possible situation where the premises are true and the conclusion false. Is there?
不是，没有可能情境，前提为真结论为假，不是吗？
Notice that the premises are true, the conclusion is true but not the argument itself.
注意前提是真的，结论是真的,但是结论不是。
It doesn't matter how many premises are there if all the premises are true the conclusion must be true as well.
无所谓，有多少前提？如果所有前提都为真，结论肯定也为真。
Okay here is an example, here we have two arguments in both cases the premises are actually true and the conclusion is actually true.
这里有个例子，我们有两个论点，这其中的前提都为真，结论也为真。
The conclusion is true, but that's okay. It's still valid.
结论为真，但是可以，这仍然有效。
So you site and support of a conclusion, one of your premises is true so that's fine but it's irrelevant to the conclusion.
所以你采用并支持结论，其中一个前提为真，很好，但是与结论不相关。
No I am sorry, if those premises are true that the conclusion has to be true doesn't it?
不，对不起，如果这些前提为真,那结论必定为真，对吗？
What's the difference between them, the answer in this case if the premises are true the conclusion couldn't be false.
不同点是什么呢？答案是,如果前提为真，结论不可能为假。
What about if its got true premises and a true conclusion?
如果有真前提和真结论呢？
应用推荐