Category Archives: Video

Simon Sinek: The Finite and Infinite Games of Leadership

Management, Video

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

Technical Stuff, Video, , ,

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

Communication, Video,

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?

Architecture, Career, Video

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: