The book publication couldn't have come at a better moment as the community waits for Ethereum to switch to PoS. The book will release on September 27, two weeks following the Ethereum Merge deadline. A compilation of Buterin's essays on the development of Ethereum throughout the years is available in PROOF of STAKE: The Making of Ethereum and the Philosophy of Blockchain.
He was considering the challenges and opportunities of creating an internet-native world while those around him were preoccupied with watching the value of their tokens increase. Many crypto players still don't fully understand what PoS is. The new consensus process promotes a solution to the Proof-of-Work (PoW) method's energy consumption issue. With the new system, validators take miners' positions and must invest 32 ETH to be qualified to publish a block.