What I took from point 21 (for me the most interesting of all) was the focus – in the context of something long term – on “iterating, prioritizing, discarding,

What I took from point 21 (for me the most interesting of all) was the focus – in the context of something long term – on “iterating, prioritizing, discarding, restarting” to the extent that “planning” doesn’t mean what it does in waterfall.