Not quite sure. But reminds me of a paper written by Paul Krugman about relativistic effects on time value of money.

https://en.m.wikipedia.org/wiki/The_Theory_of_Interstellar_Trade

Krugman also proposed a fake alien invasion in 2011 to help fix the economy. So there’s that.

Money is an energy exchange. I spend energy, (work for a living). I get paid for expending that energy. Working for a living, as those of us must do when mankind was kicked out of Paradise, creates an energy, in ourselves, systemically. That is what is being used up to provide these aliens (demons) with a life force. It is not fiat currency, that is what we poor humans clamor for, it allows us to survive, buy food and shelter, and then, when we want more than we need, we work more, which expends more energy from us, and that energy goes into that dimension that we call "outer space". It's another dimension. As is heaven. It's all about energy, and on this base level of existence, it is measured in money. I believe aliens are demons, when we spend our energy and hard earned money on "stuff" we are kept happy and asleep. And we keep giving energy to the "aliens." Money is the root of all evil. Why is that saying there? We can serve God, or we can serve Mammon.If we expended our energy not to buy stuff, but to take that energy and put it to good, we do not serve Mammon.When we refuse to play the game of more more more, we refuse to serve Mammon, and we weaken these "aliens", there will be no freedom or defeat of evil if we cling to earthly treasure in exchange for the dimension of Heaven.

Maybe they are not in space

Also found this story on BBC.

“How would we trade with aliens?” https://www.bbc.co.uk/programmes/w3ct1jnp