So epsilon * phi is exactly 1, no ?
Well, yes. I just like that they made up the numbers to get an exact negative 1. Again, I am a financial columnist, and I have a patriotic appreciation for the US’s export industry of finance, and two of that industry’s most popular products are:
1) Sprinkling some Greek letters on your work to add visual interest, and
2) Making up parameters to solve for the result you want.
Even in this tariff announcement, you see the US leaning into its comparative advantage.
That's because they know that most Americans won't be able to figure out that those terms cancel out.
The only thing that gives me any pause is the wonky math is consistent.
Worth watching this video.