It's kind of interesting that there's some kind of conservation rule at work there. The amount of effort you have to expend must scale with the number of bits you want to convey correctly _and_ the number of people you successfully convey it to. Delegating to other people will corrupt the message. Large 1-to-N blasts can only convey a few bits before people stop reading or get confused. To perfectly communicate all of the information to all of the people, you'd have to go express it to them individually.