# Do you spot anything wrong with this diagram?

**URL:** <https://talk.observablehq.com/t/do-you-spot-anything-wrong-with-this-diagram/8504>\
**Category:** Help\
**Created:** [November 16, 2023, 3:27am UTC](https://talk.observablehq.com/t/do-you-spot-anything-wrong-with-this-diagram/8504 "2023-11-16T03:27:31Z")\
**Posts on this page:** 1\
**Showing post:** 5

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**Author:** ![abitrolly](https://yyz2.discourse-cdn.com/flex030/user_avatar/talk.observablehq.com/abitrolly/32/7214_2.png) [@abitrolly](https://talk.observablehq.com/u/abitrolly)\
**Post date:** [November 17, 2023, 5:11pm UTC](https://talk.observablehq.com/t/do-you-spot-anything-wrong-with-this-diagram/8504/5 "2023-11-17T17:11:56Z")

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That graph is from [updown.io – Website monitoring, simple and inexpensive](https://updown.io/faq/what-is-apdex) which only measures the response time from the server, to detect if it is down or not, but time-to-render is a valid concert too to keep users satisfied. In fact Apdex seems to be a universal metrics for that [Apdex - Wikipedia](https://en.wikipedia.org/wiki/Apdex)

I like the design that [updown.io](http://updown.io) uses to explain the concept - lines and colors, but the logical part of the diagram is hard to read, so I wonder if it can be improved. Like, what professors in visual communication would do with it. 😃

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