Venkatesh Rao@vgrWhy am I suddenly reminded of giant stone-disc money from Yap? 🤔 Transaction fee: whole clan has to help roll the thing over to the store. No change, sorry. https://npr.org/sections/money/2011/02/15/131934618/the-island-of-stone-money…6:59 AM · Nov 12, 20176 Retweets1 Quote Tweet24 Likes