[jadeforrest]

From the article:

Include all the work. One thing to be careful of is that the demos are inclusive of all the work required to build functional software. Prepare the team to demo all the parts of their work: the APIs, the infrastructure, the reliability work, and the testing. It’s important for you to cheerlead the work that isn’t customer facing.

[stefan_]

These things don't demo well precisely because a demo doesn't help anyone to understand the decisions made in developing them. You can not just say "prepare to demo them anyway", that doesn't do anything useful.