what does 'To be false it must be true' means?

Answer 1

dunno

Answer 2

It other words it must have a correct definite answer in order for it to have a wrong answer. It must be a fact, not a theory or hypothesis, or opinion. If I said All dogs are stupid is this a true statement or a false statement. It cannot be either because my statement about dogs was not a fact it was an opinion. OK? If I said All tape is sticky. Then this is a fact and therefore can be true or false. It must be a fact, in order for it to be true or false. Hopefully this helps.

Answer 3

I'm not sure of that specific statement... but it sounds like you are describing the "liar paradox"....
if so....

I am lying now.
This statement is false.
Analyzing the statement "I am lying now", if what the speaker says is true, then the statement "I am lying now" is false, that means when the statement was said, the speaker was actually lying. But then, on the contrary, if it is true that the speaker is lying, then the statement "I am lying now" is false in that the statement turns out to be true.

To avoid having a sentence directly refer to its own truth value, one can also construct the paradox as follows:

The following sentence is true. The preceding sentence is false.


♥♥

Answer 4

I guess it means that the opposite of a contradiction is always the truth. For example, he is not dead, so he must be alive.

Answer 5

a time machine