Ethereum Account Abstraction

What is Account Abstraction? EIP-2938 has a simple definition

> Account abstraction (AA) allows a contract to be the top-level account that pays fees and starts transaction execution. 

ERC-4337 enables this, but sort of fudges the "starts transaction execution" part. Practically, yes. But not at the protocol level.

wdyt of 5189 https://eips.ethereum.org/EIPS/eip-5189

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dunno yet. i need to reread a few times. 

imo all of these diff variations seems viable… but as a non dev, my understanding of second and third order implications will be insufficient.

Haven't read! Will checkout. What do you think?