Leadership Lab: The Craft of Writing Effectively (2014)
youtu.be
youtu.be
We often use writing as a tool to think, which is useful as it helps facilitate incrementally forming thoughts. However, we also use writing as a tool communication. The main message of this video is effectively "Don't expect your readers to care about the writing you used to think!". Then, the lecturer teaches us different ways writers who wrote for thought can re-orient their writing for be best received by readers.
In terms of differences, writing for thought usually is incremental and explores a problem space. On the other hand, writing for communication usually seeks to expose and then resolve gaps in a mindset. One is converging the whole way, the other needs to diverge before converging. Effectively, making the reader care.
The lecturer also explains how important words can be, insofar as they show you as part of an 'in' or an 'out' group. To be an academic and have your work received well by other academics, you need to communicate like an academic, written communication is no exception.
The video isn't short, but well worth your time.