Category Archives: Video

Simon Sinek: The Finite and Infinite Games of Leadership

Another very interesting talk of Simon Sinek, this time at Google. The full title is

“The Finite and Infinite Games of Leadership: Leadership, Business and Finding Purpose in the Workplace.”

The following points were interesting  for me:

  • Time code 7:00 :  Infinite players do not compete with the competition but themselves. This has an awful lot of strategic implications.
  • Time code 16:55 : Dealing with personal objectives and bonuses. Also see my post about this very topic.
  • Time code 33:00 : Why are small companies usually more innovative than big ones?

VLANs with pfSense, Unifi, and VMware ESXi

For setting up VLANs in my home network I basically followed the tutorial from Crosstalk Solution on YouTube:

The result, however, was not working as expected. As it turned out the critical difference was that I have my pfSense firewall running virtualized on VMware ESXi 6.5. By default the latter “removes” VLAN tags.

But it is very easy to change this and not even a reboot is required. So here are the steps you need to perform:

  • Log in to the admin web UI of ESXi
  • Go to the network port groups and open your internal network
  • Open settings for internal network
  • Change VLAN to 4095
  • Save change

That’s all 🙂

Larry McEnerney: The Craft of Writing Effectively

Mr McEnerney presents a really good “strategic” approach to writing in a professional context. On the one hand nothing really new, but the way it is presented and details being put into context, make this a wonderful framework for me.

In particular it became even clearer to me why knowing a lot about a subject often makes it more difficult to write about it or discuss things with non-subject-matter-experts. This is also described nicely in the course description for professionals.

And finally I want to direct your attention to this nice blog post about a personal encounter with Larry McEnerney.

Job Interview Question: What is Your Favorite Algorithm?

While watching the video below, I was intrigued, when this interview questions was discussed (timestamp 56:30-57:35).

It made me think about my response, had I ever been asked the same. And it did not take too long before the answer was clear: the B-Tree. There is a very good section on it in Martin Kleppmann‘s book “Designing Data-Intensive Applications“. And I highly recommend this book anyway.

But as a starting point on B-Trees the following video is also quite helpful: