Comment by cm11

In the same way that the "worse" a speaker is at communicating the more likely something gets lost, the same is true the "worse" the audience is at listening or paying attention or understanding. Both ends make the connection. This will be easy to read as calling the audience dumb, but that’s not what I’m saying. I’m saying the ability to understand involves trying and the audience has some control over successful communication much like the speaker does. They can sit with the idea for a second longer before responding, learn and pickup (or ask about) whatever gap they have if they’re not up to speed, or in many cases just listen without distraction.

Conversations have various power dynamics where one person may have more of the burden, but it is far from always a speaker pitching something to someone who isn't inclined to it. Peers leave hallway chats regularly having “aligned” on two different things. Lots of things we’re talking about are actually complex and simple communication will effectively be miscommunication.

I think we’ve moved too far to broadly attributing confusion to weak speaking. It can certainly help to keep polishing and reworking your words to overcome worse and worse listening habits. That can take one very far, but it doesn’t change that we’re making the bar higher and higher and therefore more messages/ideas dissipate into air.