This is a far bigger problem than some here might think. I write emails now on the assumption that the recipient might read the first two sentences, skim the first two paragraphs, and ignore the rest.

They should teach this in business school. I never write my boss an email more than three sentences long. I never ask two questions in one email, unless I don't mind one of them being ignored.

Surely they do teach just that?

Whenever I write a report I always put the summary first because that is all that anyone who trusts me needs to read. The rest is supporting information and extended arguments in favour of the proposition that I make in the summary together with some notes about why alternatives are no good.

Of course, I never went to business school, I'm an engineer who started as a physicist.

You are expressing that you prefer talking on the phone. That is fine.

No, I think they are expressing the idea that people who are fluent enough with the language to prefer written over in-person communication might not fully appreciate the extremely poor reading comprehension of the general population.

I say this as somebody who used to prefer written communication. But I have come to realize that it is necessary to ask your audience, "Does that make sense?" after every major and minor point, and then listen to them reformulate what you just told them to make sure they actually got it.

So.....you are someone who prefers to talk on the phone.

You know, I couldn't have provided a better example of the exact phenomenon I was talking about. Thank you.