# World Age Problem Explanation

**URL:** https://discourse.julialang.org/t/world-age-problem-explanation/9714
**Category:** General Usage
**Tags:** world\_age
**Created:** [March 14, 2018, 12:33pm UTC](https://discourse.julialang.org/t/world-age-problem-explanation/9714 "2018-03-14T12:33:07Z")
**Posts on this page:** 1
**Showing post:** 9

<div class="post-metadata">

### Author: ![stevengj](https://sea2.discourse-cdn.com/julialang/user_avatar/discourse.julialang.org/stevengj/32/71_2.png) [@stevengj](https://discourse.julialang.org/u/stevengj)
#### Post date: [March 16, 2018, 8:50pm UTC](https://discourse.julialang.org/t/world-age-problem-explanation/9714/9 "2018-03-16T20:50:22Z")

</div>

Seel also [here for a detailed explanation](https://discourse.julialang.org/t/help-calling-a-function-defined-from-expressions/1340/4), and [here for an explanation of invokelatest](https://discourse.julialang.org/t/is-there-a-way-to-manually-trigger-a-world-age-update/7776/2).

It would be nice to have something about this in the manual at some point…

---

_[View the full topic](https://discourse.julialang.org/t/world-age-problem-explanation/9714)._