"smelly little orthodoxies" of theory and the jargon-ridden writing of their discipline. I've always despised jargon that deadens prose and will be passé by the time these young conformists hit old age. Future generations will have to decipher why words and phrases such as "subaltern," "post-structuralist," "late capitalism" meant to the scribbling class of early 21st century academics.
The advice Orwell gives is similar to advice Winston Churchill gave on good writing. This passage says it best (from Orwell, "Politics and the English Language"):
"Orwell leaves us with a list of simple rules:I am posting this for my own students and as a reminder to myself (fallen creature that I am).
* Never use a metaphor, simile, or other figure of speech which you are used to seeing in print.
* Never use a long word where a short one will do.
* If it is possible to cut a word out, always cut it out.
* Never use the passive where you can use the active.
* Never use a foreign phrase, a scientific word, or a jargon word if you can think of an everyday English equivalent.
* Break any of these rules sooner than say anything outright barbarous.