---
title: "Meaning & Key Takeaway of: developers' estimates tend to have an…"
description: "\"“developers' estimates tend to have an optimism factor of 20 to 30 percent”\" — Steve McConnell"
image: "https://sms4smile.com/quotes/i/f38/steve-mcconnell-11957_hope_developers-estimates-tend-to-have-an-opt_3152170.png"
---

#  developers' estimates tend to have an optimism factor of…

![“developers' estimates tend to have an optimism factor of 20 to 30 percent” quote by Steve McConnell](https://sms4smile.com/quotes/i/f38/steve-mcconnell-11957_hope_developers-estimates-tend-to-have-an-opt_3152170.png)   [Download](https://sms4smile.com/quotes/i/f38/steve-mcconnell-11957_hope_developers-estimates-tend-to-have-an-opt_3152170.png) [Open image](https://sms4smile.com/quotes/i/f38/steve-mcconnell-11957_hope_developers-estimates-tend-to-have-an-opt_3152170.png)

> ““developers' estimates tend to have an optimism factor of 20 to 30 percent””

[Steve McConnell](https://sms4smile.com/quotes/author/steve-mcconnell/)

## About This Quote

This interpretation was drafted with AI assistance. It is one reading of the quote, not the author's own explanation.

Developers’ time estimates are habitually overly optimistic by about 20‑30 %.

**In simple terms:** Estimates are usually too hopeful.

Key Takeaway

Adjust estimates for realistic buffers.

Themes

project management software development estimation

Mood

pragmatic cautious

Type

technical advice

When to use this quote

- software planning
- client negotiations
- team sprint planning

Key Concepts

optimism bias risk management

Questions to Reflect On

- How can you improve estimate accuracy?
- What buffers can you add without waste?

A Different Perspective

Over‑optimism can erode trust if not managed.

★ ★ ★ ★ ★   No ratings yet

[Hope](https://sms4smile.com/quotes/about/hope/) [Optimism](https://sms4smile.com/quotes/about/optimism/) [Programming](https://sms4smile.com/quotes/about/programming/)

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