Drafting a patent is exhausting and humbling! I've begun working with a patent attorney. Being put on the spot to explain one's innovation to a novice is quite a feat, especially when said novice is a somewhat impatient (though clearly competent) attorney. The trick is maintaining my self-confidence that the innovation really exists.
One essential ingredient to any presentation is knowing your audience. This holds for patent work as well. The problem is: how do you know your audience? And if you don't know your audience, you need to assume they'll have essentially no knowledge or background that you can draw from, even though you must also assume that they will have a great wealth of materials to access to compare and contrast the ideas you present. And so, we proceed by defining terms: you know like "more than one," because it's not safe to assume self-evidence.