partial UBI is probably already financiable today by printing new dollars

Ah the old “What do you mean there’s debt? Just print more money.”

Top tier bait, bravo

In general each dollar given to the poorest in an economy adds more to economic growth. That’s because the velocity of money is also important. The person living on a marginal wage tends to buy essentials first and spends a greater proportion of their income. Some of that may go to local businesses who in turn spend locally with tighter margins. The faster money travels from hand to hand and the more participants the larger is the overall benefit. Alternatively you can subsidise something everyone needs like healthcare and education. That’s effectively the same as putting money in everyones pocket but the benefits are more targeted.

And now imagine giving the money only to those, who need it. For example working people with minimal income. Then the money would go only to people, for whom 300$ would really matter, and they payout could be way larger or the deficit lower.