When you assume someone knows what you're talking about, and they don't, it can make them feel inferior and miss a lot of important information. Figure out what's common knowledge and what's not by practising on someone inexperienced before pitching an idea to your boss.
It's important that your boss gets all of the information and feels comfortable discussing the topic during a pitch. To ensure this, practise on someone else who is equally inexperienced. Entrepreneur explains:
Find someone to practice your pitch on who preferably has a similar lack of knowledge or appreciation about the technology you're presenting. Make sure they're open to providing honest feedback. They will ask you the questions your [boss] might be too embarrassed to ask, make you dig deeper, and they will let you know if it sounds like you're talking down to them.
Keep in mind that this can apply to pitching ideas to peers, investors, or anyone else. If it's a really important pitch, make sure you practice it first, with the right people.
Entrepreneur has some other tips for pitching ideas below.
Picture: Tobias Toft/Flickr