I think the argument is that there is inherent value in helping fellow man/woman, self actualization, etc - and that is the reward in itself.
I do not agree with this.
If I have to do work or starve, maybe I'm willing to dig shit for $15/hr.
If nobody has to do work to survive, suddenly you have to shell out $300/hr to motivate someone to do it.
And tbh, the kind of person that would study medicine for 10 years is probably not gonna be the kind of person to settle for the survivability-level income of UBI.
In the situation you describe, I would have a pretty strong motivation to fix the problem if it was my property (deeply unpleasant living conditions). If it was my neighbor's property, I would also have a strong motivation to fix it (sense of community). Neither of those things is tied to money.
Not everyone is motivated by the same things. Avarice is not the root of all industry.
Society then probably gets restructured so that everyone is expected to get at least a PhD rather than a bachelors. Mathematic literacy matches that of linguistic literacy - it will no longer be socially acceptable to claim you are bad at math the same way it's no longer acceptable to be unable to read or write. Almost everyone will have the engineering knowledge necessary so they know how to fix and program the robots. Everyone learns multiple languages and does part of their studies abroad so there is less destructive nationalism. Society starts to value knowledge and the dissemination of knowledge more than the accumulation of capital and wealth which only leads to the destructive forces of extreme inequality and wealth. We start moving towards a more utopian Star Trek vision of the world, hopefully culminating in the creation of a machine like the replicator and the ability to perform interstellar travel which would truly be the end of the scarcity dynamic and a new era of humanity based on abundance and scientific exploration.
Number of People with Bachelors degrees continues to grow:
https://www.forbes.com/sites/michaeltnietzel/2021/02/22/new-...
Number of People with Masters and PhD degrees doubled since 2000:
https://www.census.gov/library/stories/2019/02/number-of-peo...
If you do 30 hours of plumbing a week for 80$ an hour, you make that UBI + 2400$ a week (or wherever the market seems your work worth).
There is always an incentive to do more, and especially as long as the market incenctivises/rewards more or less useful things (e.g. externalities get properly accounted for), then people which aren't content with bare survivability will at least for part of their time do something deemed "useful" or undesirable.
Same as today, with money.
Unlike today, someone receiving poverty support who does this won’t lose nearly as much in poverty support as they make digging in shit, so the marginal return on digging in shit will be greater.
UBI (under some different names) was initially proposed as a conservative alternative to means-tested poverty support, specifically because it relieves perverse incentives and reduces duplication (with the tax system) of function in means-tested benefit programs.
> In that “without working” society, who digs into human manure? Who comes to pick up the trash? Who comes to fix a broken AC? Who wants to spend 12 years studying medicine to save the lives of those who aren’t working?
Being able to minimally survive without working and not being punished by having the support rapidly, at a high ratio, reduced when you have outside income separate from the basic support does not mean not working is the norm in society.
One technicality that blocks me is something I encountered not that long ago...
How do you compensate those that will come dig in human manure, sometimes for hours, to fix a house's clogged pipe? I had to do that: toilets wouldn't flush anymore, shits floating and all. I didn't know where the pipes were exactly and one them, the last one before the sewers, was clogged. So basically 40 meters of shit blocked inside the pipe, which then started overflowing on the property, for weeks (or months), unnoticed.
The plumber couldn't come immediately (it was a sunday late in the afternoon) but would be there next morning.
So for five hours I dig into human manure to find the damn pipe (which I more or less knew where it was located). It saved the plumber five hours of digging into, literally, shit and piss (saved me five hours of billing and five hours of waiting for things to be fixed too).
In that "without working" society, who digs into human manure? Who comes to pick up the trash? Who comes to fix a broken AC? Who wants to spend 12 years studying medicine to save the lives of those who aren't working?
That's what I don't get.