Improve your writing without dumbing down.
At work, we write to achieve an objective, to change the way a person thinks, feels or acts. To be in with a chance of achieving your goal, your readers must be able to understand what you’ve written.
Everything you learned about writing English is wrong. But that’s OK.
People have neither the time nor the desire to read long, complicated text. They want you to get on with it, get to the point, and then stop.