[...] Marianne [...] asks Joanna if she finds it strange, to be paid for her hours at work - to exchange, in other words, blocks of her extremely limited time on this earth for the human invention known as money.

It's time you'll never get back, Marianne adds. I mean, the time is real.

The money is also real.

Well, but the time is more real. Time consists of physics, money is just a social construct.

Yes, but I'm still alive at work, says Joanna. It's still me, I'm still having experiences. You're not working, okay, but the time is passing for you too. You'll never get it back either.

But I can decide what I do with it.

To that I would venture that your decision-making is also a social construct.