Cognitive Scaffold

Preparing your thinking workspace

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MENTAL MODEL · M3637

Latency

Latency
SystemsHigh supportSystems Theory
Included
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Version 1.0.0 · Updated 2026-07-28

CORE DEFINITION

The time required from sending an instruction to receiving a response. It is the counterpart of bandwidth (the amount of data transmitted per unit of time). Scaffold role: speed of response. In a system, high bandwidth (able to do a lot of work) does not mean low latency (fast to respond). If you are fighting a fire or doing high-frequency trading, latency matters more than bandwidth. When optimizing a process, ask yourself: are you widening the road (bandwidth) or removing the traffic lights (latency)?

SCAFFOLDING EFFECT

psychology

Reduce cognitive load

- Judge response speed separately: high throughput does not guarantee a fast response. - Match latency to stakes: in firefighting or high-frequency trading, latency beats bandwidth. - Diagnose the bottleneck: ask whether you are widening the road or removing the traffic lights.

anchor

Anchor fast decisions

Latency is the time a system takes to respond to a request, and it is often split into network, computation, and queuing delay. It is a key constraint on user experience and system throughput, and it is frequently traded off against throughput.

MINIMUM ACTION

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Source support: Explicit

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