Nobody is being "forced" to "serve" anyone; this would be funded through taxation.
$100 won't cover food, either.
Kudos on stating openly that your policy would foster and support homelessness, though. Odd to see you rip the mask off quite that cleanly.
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This is also a pretty dishonest take.
Everyone shitting on Yang for having bad ideas and that his policy arguments are weak is the marketplace freely reacting to his ideas. The "marketplace of ideas" is not some protected space where all arguments are given equal treatment regardless of their strength or validity. It's where heavy criticism is leveled against every idea to test it thoroughly, so that only the best and most resilient ideas survive that marketplace.
You've completely missed the point of the metaphor. The entire point is if you bring a shitty product (idea) to the market, you don't sell anything because everyone can see how terrible your product (idea) is. It is no guarantee of civility or acceptance. You're not owed anything by the market. If your ideas don't hold up, that marketplace will ruin you, and rightfully so.
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"Maybe we should try freeing just the house slaves, and keep the field slaves working. Let's emancipate incrementally."
That's just a pro-slavery stance. It isn't some fancy middle ground.