Presented roadmap / prioritization to the dev team today... it went over their heads

I tried to explain some really basic stuff.. RICE, GIST, Kano. They were uninterested.

I presented a Now/Next/Later roadmap and explicitly state "This does not correspond with a literal timeline." The next question I got was "Okay, but when is 'Next'?"

One of the devs told me that they wanted an exact sequence of the next things that were going to come to them. I told him that we can tell him what he's working on in the current iteration, and what he's probably working on in the next iteration, but not beyond that, because we need to be able to respond to customer needs, market trends, etc. He said that this is unclear, makes their jobs harder, and is ultimately bad for the product.

I really don't know how to communicate to them that we need to be able to pivot. They just did not understand anything I was saying.