> ## Content Index
> Fetch the complete content index at: https://www.pesec.no/llms.txt
> Use this file to discover other available public pages before exploring further.

# An expensive lesson
- URL: https://www.pesec.no/an-expensive-lesson/
- Published: 2021-10-12T07:03:00.000Z
- Updated: 2021-10-12T07:02:59.000Z
- Description: Don't allow your knowledge to rot away.
- Author: Bruno Pešec
- Tags: Newsletter, Bruno Unfiltered, Discipline, Leadership

Document however you can what you've learned about yourself and your business in the last 18 months as the world rushes back to its old habits. This insight will be most valuable when another global disruption strikes.

## Upcoming growth opportunities with Bruno

### October 19–21: Playing Lean & Business Modelling Facilitator Training

Unique opportunity to become both a Playing Lean and Business Modelling Facilitator in a single workshop. Spread out over three evenings so you don't lose precious client time. Purchase your ticket [here](https://www.playinglean.com/products/remote-playing-lean-business-modelling-facilitator-training?ref=pesec.no).

### October 25–27: 7th European Lean Educator Conference

I'll be giving a talk on taking physical experiences online, and a special version of Playing Lean workshop targeted at those who work at universities and other education institutions. Find conference details [here](https://www.sintef.no/en/events/elec2021/?ref=pesec.no).

## Three latest posts

[Test twice, run oncePractice safe experimentation.![](https://www.pesec.no/favicon.png)Bruno PešecBruno Pešec![](https://storage.ghost.io/c/72/d5/72d522ba-f2e5-4415-a19c-d8f567c36347/content/images/2021/09/Test-twice--run-once.jpg)](https://www.pesec.no/test-twice-run-once/)

[Webinar archive updateTranscripts galore.![](https://www.pesec.no/favicon.png)Bruno PešecBruno Pešec![](https://storage.ghost.io/c/72/d5/72d522ba-f2e5-4415-a19c-d8f567c36347/content/images/2021/10/Bruno_Pesec-Webinars.jpg)](https://www.pesec.no/webinar-archive-update-october-2021/)

[CrazeBe stalwart.![](https://www.pesec.no/favicon.png)Bruno PešecBruno Pešec![](https://storage.ghost.io/c/72/d5/72d522ba-f2e5-4415-a19c-d8f567c36347/content/images/2021/07/Bruno-Unfiltered--3--3.png)](https://www.pesec.no/craze/)

---

*Bruno Unfiltered is a weekly newsletter bringing you Bruno's latest thoughts on contemporary topics in his signature style. No one and nothing is spared.*