Apparently @Purism dropped the plan to create a pen tablet convertible - at least it disappeared from their website. Meanwhile BYOD classrooms are flooded with iPad Pros and Surface Tables without any viable open alternative in sight.
Usually I create slideshows using one or multiple tools of [OrgMode, LaTeX Beamer, Slidy, Reveal.js]. Today I learned that one can also create slideshows using Racket. This got to be the most obscure way to create a slideshow! (Any challengers?)
I spent ages to find out why certain ports aren't blocked by my servers firewall even though the rules were correct - until I traced the route on said ports and realized that my mobile provider reroutes the traffic on said ports.