What are the useful truths that the mainstream doesn't know?
It’s not ‘free’, just very very cheap. If food at the mall was as cheap to produce as ketchup, they would probably just make the food free to bring in business.
Business in the sense of the person who is now in the mall spending money on something other than food which is not free. Everything being cheaper makes sense, some things being free makes sense, everything being free doesn't.
You need to pay for raw material, pay off investment in machinery and make enough to motivate yourself.
Even if my customers don’t pay me any cash, they still have value to me.
Are you sure ? Note that there is , for instance, no point in advertising in Gratistopia.
When automation comes, producers will compete against eachother for customers.
If every customer is worth zero, there would be no point.
The cost of production will essentially be 0,
It won't be exactly zero.
But in a fully automated situation, the production of food wouldn’t cost any labor at all, and therefore not cost any money at all either.
If the owners of the automata give the automata's products away for free, what's their motivation to invest in automata? You would need communism as well as full automation.
Well, obviously if someone stops working then there is less total goods and services produced. That’s a loss of real economic value
If they stop, and they were doing something useful, and nothing replaces them. Getting rid of bullshit jobs and increasing automation aren't bad things. Although that won't be the whole story.
All very spicy, but it doesn't address the intellectual content of LW at all.
Thats not what mathematical realism is supposed that mean. If non contradict is the criterion of mathematical truth, MR suggests that every non contradictory entity exists somewhere , but doesn't require it to exist everywhere ... or need your input. So if it's non contradictory to eat an enchilada, one of your counterparts already is ...but there was is no reason for you to be, since not eating an enchilada is also non contradictory.
But that's still not how MR works: existence is the criterion of truth, not truth of existence. If it's not in Plato's heaven, it's not true even if it's non contradictory.
One of those is on record as having a ridiculously negative view of LW
Say more!
Logical positivism/verificationism is the obvious example.