Some questions about the Lightning network: Bitcoin

I understand that the basic premise of the Lightning network is for Bitcoin peer-to-peer exchanges that have been grouped into a multi-signature address, so that only this pool is written in the blockchain and incurs a transaction fee (as well as closing this address), thus making transactions between two essentially free and instantaneous parts.

Is it a kind of "bypass" of an intrinsic fault of the Bitcoin network? In other words, why the type of "average coded man"? The very premise of the Lightning Network itself is an admission of the inefficiency and cost of direct peer-to-peer exchange? As usual, it presents itself as a "solution" to high transaction fees and waiting times, when in reality it is more a work-around of what is already there?

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