"Everyone hears only what he understands."
Johann Wolfgang von Goethe.
An important lesson at any stage of life, but when writing about yourself (in a CV for example) and striving for clarity of message to achieve understanding for your readers, some thought about what you are saying and how your are saying it is essential. Moreover with the written word more care is needed. Punctuation gives meaning because you can write as you would speak, with all the important pauses and emphasis.
My point? That we should all invest a little more time in making sure we can be understood.