[obstacle1]

I am interested in learning about how "shard chains" work.

I'm concerned after reading https://ethereum.org/en/eth2/shard-chains/ that sharding is aimed at letting individual dApps roll up transactions -- i.e. the individual app would be the effective shard key -- and thus that would introduce some notion of centralization into the system.

[magicjosh]

I imagine there are some good podcasts or articles discussing sharing in greater depth. I'm interested as well if anyone has suggestions!