If you look at the slides in the article they are quite cluttered – a lot of the time text has been made smaller or larger or put in a weird place (relative to

If you look at the slides in the article they are quite cluttered – a lot of the time text has been made smaller or larger or put in a weird place (relative to a normal justification/alignment) to fit a visual motif which is unrelated to the subject matter of the presentation (e.g. the cover slide on NLP in Python). I think this is emblematic of how the author misses a really important basic principle: layout. If you set up a twelve column grid in PowerPoint and align everything to this your presentation will immediately look much cleaner. In terms of fonts I think much better recommendations are fonts such as Akzidenz-Grotesk or Avenir (seriously underrated font).