Knowledge for two
Goodman first author. A book review in Science that reports no data of its own. It praises the book, then argues that common knowledge in the strict infinite sense may be unachievable, and separately that coordination does not require it, since two neighbours whose weather apps both read sixty degrees will meet anyway. Its verdict is that the book's demonstrations fall short of establishing that common knowledge is the key to coordination.
Goodman first author. A book review in Science that reports no data of its own. It praises the book, then argues that common knowledge in the strict infinite sense may be unachievable, and separately that coordination does not require it, since two neighbours whose weather apps both read sixty degrees will meet anyway. Its verdict is that the book's demonstrations fall short of establishing that common knowledge is the key to coordination.
Written from the full text read 2026-10-18.
What our sources record
Recorded when this source was checked, figures included, with page references and quotation marks removed.
Goodman, J., & Firestone, C. (2025). 'Knowledge for two.' Science, 390(6770), 246. doi:10.1126/science.aeb1081.