These days there are many ways of presenting the data. Powerpoint presentation videos and audios are the best tools to convey the information in a brief way but very clearly and precisely. Many people are adopting these technics.
Even in schools and colleges, these are in use. In many places, during training programs and seminars these are coming in handy. In executive presentations also these are used for conveying the messages. So these are very important communication methodologies and they are very useful.
Knowledge is power.