I remember it well.
We were taking a break in writing workshop and one of the participants mentioned to me that his boss had told him that effective writing is simple: 'You just take all the emotion out of it'.
What? Why would you do that?
If the boss meant anger, frustration or hostility, fair enough. But all the emotion?
Emotions are vital in all forms of communication. An e-mail or letter devoid of warmth or empathy could easily come across as the work of a heartless bureaucrat. A presentation without your enthusiasm or interest will just be a boring recitation of facts.
Emotions don't have to be negative or over the top, but they're essential.