Vitalik Buterin: @vgr @robinhanson 我忘了是什么时候，但我想大概是在 2017 年左右。也许在骗局开始成为大问题之前不久。

原推：@vgr @robinhanson I forget when but I think it probably was around 2017 or so. Maybe shortly before the scams started becoming a big deal.
https://twitter.com/VitalikButerin/status/1588380763439136769