[mech1234]

1. Below is a summary of evidence that UBI reduces employment. The reductions of working hours are substantial, even in studies widely spun as "no change". Below that is also HN debate about it.

https://www.chrisstucchio.com/blog/2019/basic_income_reduces...

https://news.ycombinator.com/item?id=22493537

2. Assuming that the equilibrium point remains at the same price level is difficult. It requires assumptions about the elasticity of demand and the elasticity of supply. Generally, if UBI has disincentivized work, you would expect less work, less supply, and a higher equilibrium price.

3. Under a constant money supply, increased velocity of money does create inflation. This is fairly standard economic theory. Increased hoarding is definitively a decrease in the velocity of money.

4. Fair enough, but it requires you to trust the politicians to pass a tax that impacts only the extremely wealthy. This is not guaranteed or even likely.