What is truth?
Which is THE truth?
Is this true?

One word, three questions…

‘Truth’ is a convention.
You cannot understand ‘truth’ without ‘lie’.

Watch the video.
Go on, I won’t go anywhere!

It’s irrelevant for the current discussion whether the drongo lies consciously or has just developed an ‘ordinary’ skill. Equivalent to that of feeding itself by ‘fishing’ worms. https://www.youtube.com/watch?v=xwVhrrDvwPM.

It’s enough for me that both us and the meerkats are able to notice that the drongo did lie. And, at least once, did sound the alarm about a real danger.

Hence it is possible, for both us, humans, and the meerkats to tell lies from truths.
Again, I have no idea whether the animals do it in a conscientious manner.

All I know is that we, humans, did coin the concept of ‘truth’. And that of ‘lie’.
And we not only coined the concepts but also attached names to each of them.
We agreed among ourselves to name them truth and lie, respectively.

In fact, we have made an agreement. A gentleman’s agreement… About when to use each word.

And a subsidiary one. About when we must definitely tell the truth and when a lie is acceptable.

http://perflensburg.se/Berger%20social-construction-of-reality.pdf