Conveying information
After having written quite a few formal and informal documents and regularly explaining various topics, I've picked up on a few useful practices and things to be aware of.
Communication window
There's a certain amount of words or time you have to grip your audience's attention. The attention span might differ depending on the medium, the individual and your choice of words.
Information might be understood to varying degrees, depending on the user's familiarity surrounding the topic. And ignorance (a lack of knowledge or information) is different from stupidity (a lack of good sense or judgement).
The combination between your audience's attention span and their understanding is what I call the communication window. Effectively any surplus words spent on the topic might end up being wasted.
Listening to understand
Many things people say are true from within the perspective in which it is meant; there is often a logical sense behind what others say, and it's certainly true to them. However, not every perspective is strictly helpful. It is worth filtering information by intent and usefulness.
That is to say: it is important to understand the idea behind what's being conveyed and only make an evaluation after that, then keep what's helpful for you.
Given that statement, it also makes sense that discerning inference from observation will go a long way in being able to interpret other people's perspectives and the world as a whole. However, letting go of the ego takes time and requires practice.
We're also not talking about absolute truth here, as I believe there is no such thing. People do not store knowledge as binary data, but rather as a collection of connections that are made in the brain. Additionally, it has been proven that the brain can be tricked into believing anything. Vsauce has an interesting practical video showcasing the implanting of a memory into someone's mind.