# How Sui Works

By [lucifer](https://paragraph.com/@mgluci) · 2023-01-12

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The Sui blockchain operates at a speed and scale previously thought unattainable. Sui assumes most blockchain transactions touch non-overlapping states, meaning that transactions can run in parallel. Sui optimizes for single-writer objects, allowing a design that forgoes consensus for simple transactions.

Instead of the traditional blockchain’s fire-and-forget broadcast, Sui's design enables a requestor or a proxy to proactively talk to validators to bring a transaction to finality. This results in near instant finality for simple transactions.

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*Originally published on [lucifer](https://paragraph.com/@mgluci/how-sui-works)*