Researchers gave thousands of dollars to homeless people with positive results
cnn.com
cnn.com
One crazy experiment we could try: Give Finland (they've run a small-scale UBI exp before) $1.2 trillion to run a nationwide, long-term UBI experiment on their whole population(5M (pop. Finland) * $24k / year (UBI payments) * 10 years = $1.2 trillion).
Make the decision about UBI based on what happens in Finland after 10 years. Not perfect, and it will never happen, but certainly would be a more trustworthy indicator of UBIs real effects on a society :)
We've seen this trial plenty of times[0], the outcome is always the same. We either need to give up on UBI or start larger programs. More small trials isn't going to help anyone other than the ~hundreds of people who were lucky enough to win that particular lottery.
Politicians (in this case Sam Liccardo) will do anything for 15 minutes of fame.