Say, Sensei... Have you heard of the "Ship of Theseus"?

Hm...

Sorry, can't say I have.

I see. Well, it's some kind of a common paradox.

There was once a ship owned by someone named Theseus.

During her weary voyages, she began to accumulate damages overtime.

And so he began replacing her damaged parts with new ones.

And continued on with the voyages.

Now, suppose that every single part of the ship has been replaced with a new one...

Would you say that the current ship is still the same as the old one?

...And that's what it's about.

Well, Sensei?

What do you think?

Let's see...