An easy one!

(not)

The argument for "trickle-down economics" is that the wealthy will spend it, and that spending is a stimulus that helps everyone. The argument against is not that the wealthy will hoard it, it's that they'll spend it on things that are a lot less impactful on other taxpayers.

One Gulfstream G650 is $65 million. Say you have a stimulus that lets ten more billionaires buy G650s. That's $650 million into the economy of Savannah, GA, Long Beach, CA, dozens of other places where subcontractors work, etc. Those ten jets are a real economic stimulus for maybe 20,000, maybe 30,000 people.

But maybe eight of them don't buy Gulfstreams. Maybe eight of them buy bigger mansions. That already exist. That happen to be in Monaco, Bermuda, St. Tropez, Kingston, etc. So that's maybe 500 of your $650 million that didn't give anyone a job. A lot of it stone-cold left the country.

Now instead of a $650 million gulfstream stimulus, you decide to rebuild some roads. Best guess? $4k per mile, you're rebuilding 162,000 miles of highway. Center for American Progress estimates that's 120,000 jobs created. And it's really tough to off-shore that shit. Besides which, now everybody can use that road, not just ten billionaires. Liz Warren has said a thing or two about infrastructure and the leverage effect it has. She's a clever lady. I'll bet she's anti-G650.

it's a different argument than "quantitative easing increases wealth economy." The argument against "trickle down" is it why would you want a trickle when you can have a flood?