After deriding UBI for a long time, and believing it won't work, I came up with a trial model that, IMHO, would allow it to be tested out with minimal damage to the economy (even though I still don't think it would work):
Take a country, US for example. Let's say that society determines that a reasonable UBI is $1000/month (ignore the number, this is about the process, not the amount).
When I say "everyone", I mean "every US resident who has been a US citizen for at least X years".
- Year 1: everyone begins receiving $10/month, conditioned to willing to have employment and spending tracked by researchers. Everyone who receives a payout and also receives social support funds, sees the social support funds reduced by $10 per month.
- Year 5: if researches see no significant negative results and the economy continues to grow, etc. the payout is increased to $50/month. Otherwise, if there are significantly negative outcomes, the payout is eliminated.
- Year 10: repeat, payout increased to $100/month.
- Year 15: repeat, payout increased to $200/month.
- Year 20: repeat, payout increased to $500/month.
- Year 25: repeat, payout increased to $750/month.
- Year 30: repeat, payout increased to $1000/month. All other social payouts are ended.