🔥Why Vitalik Buterin is talking about Plasma chains again?

Last Vitalik's keynote on L2 days was all about Plasma Chains. Ethereum founders thinks, that in some time they can make a comeback.

Plasma networks, considered "child" chains of the Ethereum mainnet, conduct transactions independently and periodically report final states to the mainnet.

😕There were some problems with Plasma chains

Mainly, client-side data storage costs, exit challenges and defragmentation protocols

☝️But zk-SNARKS can resolve these issues

Zk-SNARKs prove data accuracy without revealing content. Validity proofs, and cryptographic evidence, efficiently tackle Plasma's challenge in payments and data storage. They enable creation a Plasma-like chain running an EVM.