Your argument sounds good on the surface. But this is true of any two professionals. If you find any two scientists, engineers, doctors and ask them for professional opinions separately you will likely get different answers. They may come to hold the same opinion after collaborating.
the_af|3 years ago
Ask two carpenters about which tool to use to cut a given piece of wood, and you'll get answers within a given subset of tools.
Ask two poker players about which hand is better (for the same variant of poker) and you'll get the same answer.
Ask two Feng Shui practitioners about how to best position your furniture and you'll get wildly different answers. And it's even worse with Tarot psychics.
That's because, unlike carpentry or biology, there's no rhyme or reason to Tarot, Feng Shui or palm reading: there's no real system to them for their practitioners to draw answers from, they are bullshit. You cannot grab the Big Book of Feng Shui and tell one of the two experts "nope, here it states very clearly that, according to the Laws of Feng Shui, what you are advising is wrong."
In fact, it's the sine qua non of that kind of fringe stuff: the ability to make shit up on the spot to best suit their customer/audience is a perk of their trade, but of course it harms reproducibility.
The person reading your future in coffee stains needs to creatively make shit up as they go, which means a different coffee future reader will give you a completely different answer. Or Feng Shui expert, or Tarot reader. And you cannot even tell them they are wrong, because there's no right or wrong, because everything is made up.
TL;DR: nothing they claim is falsifiable.