---
title: "Comment by Nathan Kallman on \"Σ(Reasonable Requirements) != Reasonable System\" | Hashnode"
description: "Oh and if you were wondering why this is reason #5 everyone (including me) is bad at system design, here's the first four: People rarely have experience des"
url: "https://hashnode.com/posts/sreasonable-requirements-reasonable-system/610a980b0e53fb566c75f6e8/comment/610a9a03b83e7c5625fdfe4d"
---

[Discussion](https://hashnode.com/posts/sreasonable-requirements-reasonable-system/610a980b0e53fb566c75f6e8)

Comment [Σ(Reasonable Requirements) != Reasonable System](https://hashnode.com/posts/sreasonable-requirements-reasonable-system/610a980b0e53fb566c75f6e8)

[Nathan Kallman](https://hashnode.com/@kallmanation)

[Aug 4, 2021](https://hashnode.com/posts/sreasonable-requirements-reasonable-system/610a980b0e53fb566c75f6e8/comment/610a9a03b83e7c5625fdfe4d)

Oh and if you were wondering why this is reason #5 everyone (including me) is bad at system design, here's the first four:

1.  People rarely have experience designing systems
2.  It's hard to predict the future
3.  It's hard to observe the past
4.  People struggle to see another's perspective