Why are Ethereum slots 12 seconds?

In every slot a validator is randomly selected to be the block proposer They bundle transactions together,

A randomly selected validator is tasked with proposing a new block every slot At the end of an epoch , one or more committees attests by

ethereum slot machine eth_getStorageAt is an Ethereum API method that returns the data stored at a specific storage slot within a smart contract

duck of luck online slot free I'm running an ethereum side-chain node that is based on the Infura API I'm trying to read a EIP-1967 proxy storage slot with an