Many of the pieces of information we attempt to communicate have low semantic complexity and information density. They translate very nicely into an outline or

Many of the pieces of information we attempt to communicate have low semantic complexity and information density. They translate very nicely into an outline or a list of lists. Other things are very difficult to convey, type systems, multiple levels of interpretation, multiple levels of VMs and runtimes, and things that are spread out over time or inter-related in complex ways. One thing your dyslexic friend may have is a lack of context and bullet points are the fastest way to a) build context and b) provide roots to be able to hang more information off of. tl;dr both.